Wera 05057691001 mini check impaktor 1 bits 6 piece set wera 05057691001 this set from wera includes 6 impaktor diamond coated phillips bits with in hex drive suitable for use with conventional impact drivers the rough diamond coating increases frictional resistance and thereby reduces the chances of the bit slipping out of the screw wera 05057691001 mini check impaktor 1 phillips bits 6 piece set