the new gsb 18v-45 with carbon-free engine is remarkably performing with its maximum torque of 45 nm (hard screws) and its no-load speed of 1,900 rpm very robust, the impact drill has a 13 mm metal chuck ensuring optimal torque transfer good handling and easy operation thanks to the high lightness and the very short head (only 174 mm) ensuring great compactness ampshare: the batteries and chargers are fully compatible with the bosch professional 18v system and many other tools from the ampshare multi-brand alliance. comes with (amazon exclusive set): gsb 18v-45, 2 x 2.0ah batteries, accessories, gal 18v-20, l-case