Britool 12 piece fast ratchet combination metric spanner set forged from Chrome Vanadium steel with a high chrome finish.The ratchet end provides 5° increments, and the OVG® ring profile maximises contact surface with the nut for a longer lifetime. Direction is switched by turning the spanner.The ratchet-effect open end is angled at 15° from the handle axis.ISO 691, ISO 1711-1.Contents: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 and 19mm.