This SF 4-A cordless four-tools drill driver operates on two 21.6VDC batteries and has a chuck clamping ranging from 1/16 to ½ inches. It has a no-load speed of 610 RPM for gear-1 and 2100 RPM for gear-2. The compact drill has a maximum torque of 314 in-lb for soft joints and 549 in-lb for hard joints. The kit includes a battery pack, a charger, and a bag.