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M12 B-Code Circular Metric Connectors

Amphenol LTW M12 B-Code Circular Metric Connectors offer 2 to 8 pins and feature a screw-thread mating style with complete 360° shielding. Compliant with IEC 61076-2-101, these connectors ensure industry-wide connector compatibility. Key features include a vibration-proof, corrosion-resistant design and a waterproof IP67/IP68/IP69K protection rating. Amphenol LTW M12 B-Code Circular Metric Connectors are suitable for wet and harsh environments, such as surveillance systems, mass rapid transit/railways, industrial automation, and broadband wireless access.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, PG9, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K MSBS-05PFFP-SF8001 Amphenol LTW 1: £6.65 4In Stock	Mfr. Part No. MSBS-05PFFP-SF8001 Mouser Part No 523-MSBS05PFFPSF8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, PG9, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	4In Stock	£6.65 £5.65 £5.23 £5.05 View £4.80 £4.50 £4.29 £4.09 £4.05	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, M16*1.5, Screw Thread, PCB 180 , Receptacle, Front Fastened, IP68 / IP69K MSBS-05PFFP-SF8002 Amphenol LTW 1: £6.88 9In Stock	Mfr. Part No. MSBS-05PFFP-SF8002 Mouser Part No 523-MSBS05PFFPSF8002	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, M16*1.5, Screw Thread, PCB 180 , Receptacle, Front Fastened, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	£6.88 £5.84 £5.40 £5.21 View £4.94 £4.56 £4.28 £4.00 £3.95	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, PG9, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K MSBS-05PMMP-SF8001 Amphenol LTW 1: £5.88 1In Stock	Mfr. Part No. MSBS-05PMMP-SF8001 Mouser Part No 523-MSBS05PMMPSF8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, PG9, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	1In Stock	£5.88 £5.00 £4.63 £4.46 View £4.25 £3.99 £3.75 £3.52 £3.43	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, M16*1.5, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K MSBS-05PMMP-SF8002 Amphenol LTW 1: £6.08 5In Stock	Mfr. Part No. MSBS-05PMMP-SF8002 Mouser Part No 523-MSBS05PMMPSF8002	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, M16*1.5, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	5In Stock	£6.08 £5.18 £4.78 £4.62 View £4.39 £4.10 £3.82 £3.48 £3.40	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, M12*1.0, Screw Thread, PCB 90 , Receptacle, Front Fastened, IP67 Mated MSBS-05PMMR-SF7003 Amphenol LTW 1: £6.92 9In Stock	Mfr. Part No. MSBS-05PMMR-SF7003 Mouser Part No 523-MSBS05PMMRSF7003	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, M12*1.0, Screw Thread, PCB 90 , Receptacle, Front Fastened, IP67 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	£6.92 £5.88 £5.28 £5.03 View £4.89 £4.55 £4.27 £4.00 £3.96	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Male Connector, Male Contact, SMT 180 MSBS-05PMMT-EE0001 Amphenol LTW 1: £3.82 10In Stock	Mfr. Part No. MSBS-05PMMT-EE0001 Mouser Part No 523-MSBS05PMMTEE8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Plastic, 4A, 05 pins, Male Connector, Male Contact, SMT 180 Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	10In Stock	£3.82 £3.24 £3.03 £2.92 View £2.89 £2.71 £2.60	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 1000mm, IP68 / IP69K M12B05ML-12BFR-SB001 Amphenol LTW 1: £13.00 5In Stock	Mfr. Part No. M12B05ML-12BFR-SB001 Mouser Part No 523-2B05ML12BFRSB001	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Right Angle, Screw Thread, Overmolded Double Ended, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	5In Stock	£13.00 £10.60 £9.53 £9.06 View £8.76 £8.44 £8.11 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 10000mm, IP68 / IP69K MSBS05FL-SBSFL-SB010 Amphenol LTW 1: £56.44 2In Stock	Mfr. Part No. MSBS05FL-SBSFL-SB010 Mouser Part No 523-BS05FLSBSFLSB010	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 10000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	2In Stock	£56.44 £50.48 £43.68 £41.30 View £41.28 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 2000mm, IP68 / IP69K MSBS05FL-SBSFL-SD002 Amphenol LTW 1: £24.84 8In Stock	Mfr. Part No. MSBS05FL-SBSFL-SD002 Mouser Part No 523-BS05FLSBSFLSD002	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 2000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	8In Stock	£24.84 £21.42 £18.55 £18.02 View £17.69 £17.19 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 3000mm, IP68 / IP69K MSBS05FL-SBSFL-SD003 Amphenol LTW 1: £27.70 5In Stock	Mfr. Part No. MSBS05FL-SBSFL-SD003 Mouser Part No 523-BS05FLSBSFLSD003	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 3000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	5In Stock	£27.70 £23.68 £20.64 £20.05 View £19.68 £19.11 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 5000mm, IP68 / IP69K MSBS05FL-SBSFL-SD005 Amphenol LTW 1: £34.02 7In Stock	Mfr. Part No. MSBS05FL-SBSFL-SD005 Mouser Part No 523-BS05FLSBSFLSD005	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 5000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	7In Stock	£34.02 £29.55 £23.96 £23.26 View £22.30 Quote	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 04 pins, Female Connector, Female Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated M12B-04BFFA-SL8001 Amphenol LTW 1: £7.32 81In Stock	Mfr. Part No. M12B-04BFFA-SL8001 Mouser Part No 523-M12B04BFFASL8001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 04 pins, Female Connector, Female Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP68 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	81In Stock	£7.32 £6.31 £6.29 £6.20 View £5.36 £5.03 £4.79 £4.56	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 04 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K M12B-04BFFM-SL8A01 Amphenol LTW 1: £7.08 9In Stock	Mfr. Part No. M12B-04BFFM-SL8A01 Mouser Part No 523-M12B04BFFMSL8A01	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 04 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	£7.08 £6.01 £5.63 £5.36 View £5.11 £4.79 £4.56 £4.19 £4.16	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K M12B-05BFFM-SL8B01 Amphenol LTW 1: £8.18 172In Stock	Mfr. Part No. M12B-05BFFM-SL8B01 Mouser Part No 523-M12B05BFFMSL8B01	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	172In Stock	£8.18 £7.10 £7.09 £6.98 View £6.80 £5.51 £5.16 £4.80 £4.73	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 5000mm, IP68 / IP69K M12B-05BFFM-SL8B05 Amphenol LTW 1: £16.93 9In Stock	Mfr. Part No. M12B-05BFFM-SL8B05 Mouser Part No 523-M12B05BFFMSL8B05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Overmolded, Length 5000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	£16.93 £14.39 £13.62 £11.78 View £11.38 £11.01 £10.66 £10.29 Quote	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Screw-in, Field Installable, F4.0 - F8.0mm, IP67 Mated M12B-05BMMB-SL7001 Amphenol LTW 1: £7.76 88In Stock	Mfr. Part No. M12B-05BMMB-SL7001 Mouser Part No 523-M12B05BMMBSL7001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Screw-in, Field Installable, F4.0 - F8.0mm, IP67 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	88In Stock	£7.76 £6.59 £6.09 £5.88 View £5.47 £5.16 £4.91 £4.61 £4.56	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 2000mm, IP68 / IP69K M12B05ML-12BFL-SB002 Amphenol LTW 1: £14.40 12In Stock	Mfr. Part No. M12B05ML-12BFL-SB002 Mouser Part No 523-M12B05ML12BFLSB2	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 2000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	12In Stock	£14.40 £12.23 £11.32 £10.91 View £10.11 £9.52 £8.88 £8.80	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 1000mm, IP68 / IP69K M12B05ML-12BFL-SD001 Amphenol LTW 1: £12.09 25In Stock	Mfr. Part No. M12B05ML-12BFL-SD001 Mouser Part No 523-M12B05ML12BFLSD1	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 1000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	25In Stock	£12.09 £10.28 £9.63 £9.18 View £8.73 £7.95 £7.41 £7.27	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 2000mm, IP68 / IP69K M12B05ML-12BFL-SD002 Amphenol LTW 1: £12.85 10In Stock	Mfr. Part No. M12B05ML-12BFL-SD002 Mouser Part No 523-M12B05ML12BFLSD2	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 2000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	10In Stock	£12.85 £10.91 £10.11 £9.74 View £9.28 £8.70 £8.28 £8.18	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K M12B05ML-12BFL-SBA05 Amphenol LTW 1: £10.00 10In Stock 40Expected 05/10/2026	Mfr. Part No. M12B05ML-12BFL-SBA05 Mouser Part No 523-M12B05MLBFLSBA05	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight-to-Straight, Screw Thread, Overmolded Double Ended, Length 500mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	10In Stock 40Expected 05/10/2026	£10.00 £9.52 £9.18 £7.88 £7.79	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, PG9, Screw Thread, Solder, Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K M12B-05PFFS-SF8001 Amphenol LTW 1: £6.55 19In Stock	Mfr. Part No. M12B-05PFFS-SF8001 Mouser Part No 523-M12B05PFFSSF8001	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Hexagonal, PG9, Screw Thread, Solder, Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	19In Stock	£6.55 £5.55 £5.12 £4.96 View £4.70 £4.36 £4.06 £3.75 £3.71	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, PG9, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K M12B-05PMMP-SF8001 Amphenol LTW 1: £5.99 10In Stock	Mfr. Part No. M12B-05PMMP-SF8001 Mouser Part No 523-M12B05PMMPSF8001	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Hexagonal, PG9, Screw Thread, PCB 180 , Receptacle, Front Fastened, Panel Thickness 4.5, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	10In Stock	£5.99 £5.14 £4.61 £4.32 View £4.03 £3.74 £3.47 £3.20 £3.14	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP67 Mated MSBS-05BFFA-SL7001 Amphenol LTW 1: £12.52 9In Stock	Mfr. Part No. MSBS-05BFFA-SL7001 Mouser Part No 523-MSBS05BFFASL7001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Female Connector, Female Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP67 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	£12.52 £10.64 £10.09 £8.74 View £8.31 £7.92 £7.69 £7.42 Quote	Min.: 1 Mult.: 1
Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP67 Mated MSBS-05BMMA-SL7001 Amphenol LTW 1: £12.11 9In Stock	Mfr. Part No. MSBS-05BMMA-SL7001 Mouser Part No 523-MSBS05BMMASL7001	Amphenol LTW	Circular Metric Connectors M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Solder, Field Installable, F4.5 - F6.5mm, IP67 Mated Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	9In Stock	£12.11 £10.28 £9.76 £8.45 View £8.04 £7.66 £7.44 £7.18 Quote	Min.: 1 Mult.: 1
Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 4000mm, IP68 / IP69K M12B-05BMMM-SL8D04 Amphenol LTW 1: £11.92 290On Order	Mfr. Part No. M12B-05BMMM-SL8D04 Mouser Part No 523-M12B05BMMMSL8D04	Amphenol LTW	Sensor Cables / Actuator Cables M12 Circular Metric Connector, B Code, Metal, 4A, 05 pins, Male Connector, Male Contact, Straight, Screw Thread, Overmolded, Length 4000mm, IP68 / IP69K Learn More about Amphenol LTW amphenol m12 b code connectors	Datasheet	290On Order On Order Ship Dates Mfr. No: M12B-05BMMM-SL8D04 Stock: 0 On Order: 60 Expected 19/11/2026 130 Expected 11/12/2026 100 Expected 08/01/2027 Factory Lead Time: 13 Weeks	£11.92 £9.89 £9.53 £8.93 View £7.94 £7.80 £7.75	Min.: 1 Mult.: 1