The top of Attack Driver is manganese phosphate treated to prevent chrome peeling off the head when it is struck.1 BLACK FINISHED HEADSpecial Heat treatment is applied on the parts of Attack Driver. Hardness of Striking head is slightly softer to prevent cracking. The cam part has higher hardness to improve anti-wear.1 3 HEAT TREATMENT FOR ANTI-CRACKStrong spring is used to convert the striking power efciently into twisting power.3 SPRINGATTACK DRIVER®Original body shape allows stronger grip. It makes it easier to convert the striking power into twisting power.2 BODY SHAPE321Technical Features of Ko-ken Tools013


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