Designed to fit most slotted saw screws, this driver has a 0.350" wide tip ground to a consistent, parallel 0.032" thickness for good registration. This not only avoids damage to the slot from a poorly fitting tip, but also reduces the chance of slipping and marring the saw handle. The handle is made from stained, unlacquered hardwood in a classic style with four flats and rounded corners to fit comfortably in the hand and prevent rolling on the bench. The steel shaft is hardened to Rc60-64 and secured with a steel ferrule.