The Ram MicroLab 350 features a reversible 35,000 rpm handpiece with both a 3/32" and 1/8" collet, a controller unit with a variable speed control dial, power switch and Forward/Reverse switch. The MicroLab 350 also has an on/off foot pedal. This unit carries a 6 month warranty on the handpiece & and a 1 year on the controller unit.