High quality bits for Phillips screws. The Impaktor technology offers an above-average service life even under extreme circumstances. Enhanced friction resistance, thanks to the rough diamond-particle coating on the bit tip, prevents any slipping out of the screw head. Particularly suitable for use with customary impact drivers. ¼" hexagon, suitable for holders as per DIN ISO 1173-F 6.3. - 851/4 IMP DC PH DIY Impaktor PH bits, PH 2 x 50 mm, 5 pieces