Cordless angle screwdriver series bosch gwi bosch professional battery voltage 108 v number of batteries without batteries type of battery li ion battery management replaceable battery gear 1 speed tool holder keyless idle speed max 585 rpm max drehmoment hart 13 nm weight 11 kg drill diameter in steel 8 mm drill diameter in wood 10 mm charging time 30 min torque levels 7 1 max screw diameter 5 mm special features electronic speed control