State of the art PoziSquare and ACR Anti-camout recess for 'Stick-Fit' and stable driving.• Self centring, stick-fit PoziSquare• Self-countersinking reinforced double angle head• Tempered and waxed high quality steel with zinc and yellow plating• Slotted shank for reduced wood splitting• Quick start point for rapid starting with minimum force• Driver bit included in every box