HIGH SPEED ROTARY HANDPIECE Variable speed up to 38,000 RPM This kit is ideal for high speed applications up to 38,000 rpm, including light deburring of cast pieces, bright cutting in jewelry making, and fine detailing in woodcarving. Compared to flex shafts, micro motors have mush less torque, however, the higher speed results in a comparable rate of material removal with a light touch. The simple coil cord connection between the handpiece motor and control box is another key advantage. Unlike the "drag" and general restriction in the maneuverability you have with a shaft and sheath, micro motors offer mush greater freedom of movement. The compact control has switches on the front for On/Off power, forward or reverse rotation, and manual foot speed control. The back of the control box has a convenient voltage selector switch for operation with either 115v or 230 volt-on need to specify. The control converts AC current to DC current required for the handpiece. THe box also have receptacles for the Variable Speed Foot Control and or optional On/Off foot switch. Model #1070 Motor Kit Includes: Control, handpiece with 3/32" collet, variable speed control, handpiece cradle, and spare pair of motor brushes, spare fuse, and collet changing wrenches. The High Speed Rotary Handpiece is 6.2" overall length, 5/8" grip diameter, 7.3 oz. weight. It has a slender, contoured grip for precise and very high speed work and quick release rotary type chuck. Optional 1/8" and 3 mm collets are available.