Dremel 1100-N/25 7.2-Volt Stylus Lithium-Ion Cordless Rotary Tool Kit with Docking Station Patented nose tip control - On/Off at front of tool for one handed operation Variable speed 5,000 - 25,000 RPM for superior performance and control Pistol grip design for outstanding balance, performance and precision control Docking station - Holds the Stylus during projects while charging battery. 7.2V integrated lithium ion battery - Holds a charge 6 times longer than Ni-Cd