High quality Impaktor bits for hexagon socket screws. Impaktor technology offers an above-average service life even under extreme circumstances. Enhanced friction resistance, rough diamond-particle coating on the bit tip, prevents any slipping out of the screw head. Hex-Plus ensures a greater contact surface in the head of the screw. 1/4'' hexagon, suitable for holders as per DIN ISO 1173-D 6.3.