the gsb 12v-15 professional cordless impact driver features a 2-speed planetary gear for efficient drilling and screwing in wood and metal and punching in masonry professional performance: the 2-speed gear allows you to have a high torque of 15 nm (soft screws) for drilling (up to o 19 mm) and for screwing (up to o 7 mm). high quality 10 mm auto-lock chuck professional 12 v system. compact performance. total freedom. all batteries are compatible with new and existing bosch professional tools in the same voltage class. comes with (amazon exclusive set): gsb 12v-15, 2 x 2.0 ah batteries, charger, 2 sets of drill bits, 1 set of bits, 1 set of 7 wood drill bits, 1 set of 7 metal drill bits, bag