the gdr 18v-200 cordless impact driver offers an excellent power to size ratio and a 1/4" bit holder. the gdr 18v-200 is equipped with a carbon-free motor allowing for a high torque of 200 nm. it is ideal for hard-to-reach places the gsb 18v-45 professional cordless drill driver features a 13 mm metal chuck for high torque transfer the gsb 18v-45 is a high-performance drill driver with maximum torque (hard screws) of 45 nm and no-load speed of 1,900 rpm comes with (amazon exclusive set): gdr 18v-200, gsb 18v-45, 1 gba 18v 2.0ah battery, 1 gba 18v 4.0ah battery, gal 18v-40 fast charger, l-case