* 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.