• No load RPM: 8,000 - 25,000; 2.25 HP, fixed base designed for upright use or under a table; microfine bit depth adjustment; quick clamp system for fast, easy motor adjustment; Constant Response Circuitry™ monitors and maintains variable speed under load, provides soft start and overload protection; precision centering for using jigs and templates; motor can be positioned with cord and switch on right or left side of base; Includes: RA1161 fixed base, plunge base, 1/4" & 1/2" self releasing collets, wrenches, chip shield, above table height adjustment wrench