The Senco DS522-18V DuraSpin Auto-Feed Screwdriver is powered by an efficient, variable speed, brushless motor. It has a variable speed selector for heavy steel and a quick-release feed system with our patented corner fit technology. The DS522-18V also features feed on return, so the next screw is aligned with the bit for better line of sight and easier, more accurate screw placement. Comes with a 5-Year Warranty. Supplied with 2 x 18V 3.0Ah Li-ion Batteries, 1 x Li-ion Charger and 2 x 174mm Screwdriver Bits. Specification Fastener Type Collated Screws Fastener Length 25-55mm Screw Diameter 3.5-5.5mm Rotations per minute 2,500 rpm Torque 8Nm Tool Dimensions (LxWxH) 372 x 86 x 243mm Recharge Time 100% 45 minutes, 80% 15 minutes Weight 2.48kg