Cordless drywall screwdriver cordless drill driver series bosch professional bosch gsr battery voltage 18 v number of batteries without batteries type of battery li ion battery management replaceable battery gear 2 speed tool holder 14 inch internal hexagon idle speed max 4 200 rpm max drehmoment hart 25 nm weight 19 kg integrated torch drill diameter in steel 10 mm drill diameter in wood 29 mm charging time 60 min chuck width 1 5 13 mm tor