Ck t4343m combination spanner sets ck tools t4343m12st hot drop forged chrome vanadium steel hardened and tempered for strength and durability heavy duty chrome plated for corrosion resistance 12o offset bi hex ring for access manufactured to din 3113 supplied in a wall mounting rack for convenient storage sizes 8 9 10 11 12 13 14 15 17 19 21 amp 22mm ck tools t4343m12st combination spanner metric set of 12