WEN 2307 Variable Speed Rotary Tool Kit with 100-Piece Accessories Perfect for cutting, sanding, polishing, shaping, drilling, deburring, grinding and more Variable speed goes anywhere from 8,000 to 30,000 RPM Includes a 100-piece accessory set of bits, sanding discs, polishing pads, mandrels and more Onboard spindle lock makes for quick and easy bit changes Backed by a one-year warranty