DFR750Z from Makita has a rigid aluminium casing, stopper base with anti-tilt device which is designed ot prevent screw from swaying & the dust-proof construction for a smooth sliding action. This Auto-Feed screwdriver has a silent clutch & produces a load speed of 4000rpm, ideal for a range of jobs on site or around the house. * Bare Unit only. Use with your existing batteries & charger.