15,000 to 35,000 RPM. Lubricated bronze sleeve bearing motor for smooth operation. Tapered shape for comfortable control. Double insulated motor, no grounding required. 6' 2-wire cord, no adapter plug needed. Keyless chuck for bits up to 1/8" shank. Uses collets from 1/32" to 1/8". Kit contains 2-speed Moto-Pro Rotary Tool, carrying case, and 21-piece accessory set.