DuraProd represents the next generation of electric stock prod technology with a new design and improved features for safety, comfort and ease of use. Features include snap-on battery pack, safety switch, improved circuit design, comfortable over-molded handle, over-sized trigger, thumb grip, improved nut connection, and hand guard. New efficient motor requires only 4 batteries. Fits any Hot-Shot shaft (ordered separately). This handle and motor unit comes complete with 4 batteries. Wt. 2 lbs.