This tool’s ergonomic, pistol-grip design and soft-grip housing provide outstanding balance and precise control. Finger-tip on/off switch at front of tool allows for one-handed operation. Variable speed ranges from 5,000 to 25,000 RPM. 7.2V integrated lithium ion battery holds a charge six times longer than Ni-Cd (up to 2 years). Charging base “docks” tool during projects while battery is recharging. Rotary tool comes with battery, docking station, 25 accessories with case, and collet wrench.