Brittool 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 thenut 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 1contents 8 9 10 11 12 13 14 15 16 17 18 and 19mm