The bosch gdr 18 v li professional cordless impact driver is the first 18 volt impact driver with flexible battery system unique choice between the quotpremiumquot longer battery runtime and quotcompactquot less weight for even more comfortable work batteries high torque and high impact rate 3 200 bpm for fast work progress when driving screws in metal up to m 14 and wood very short design for perfect handling even in the tightest spaces and overhead unique bosch premium l