Mini cordless screwdriver series bosch gsr bosch professional battery voltage 36 v battery capacity 13 ah type of battery li ion battery management replaceable battery gear 2 speed tool holder 14 inch internal hexagon idle speed max 580 rpm max drehmoment hart 10 nm weight 05 kg integrated torch drill diameter in wood 5 mm charging time 55 min max screw diameter 5 mm special features auto lock soft handle rightleft rotation electronic spe