The bosch gsr 108 v ec hx professional cordless screwdriver lasts longer runs longer longer lifetime thanks to brushless ec motor with quotelectronic motor protectionquot emp longer runtime up to 770 screws 4 x 40 mm with a single battery charge 20 ah improved power to weight ratio with up to 18 nm torque for powerful screwdriving up to 7 mm with a head length of only 135 mm and weight of only 07 kg practical to use belt clip and bit holder for easy transport of the