At 65 Gm., it is lighter than any other prophy handpiece, which reduces hand and wrist fatigue. Convenient speed adjustment: 05000 rpm in both forward and reverse directions. Steam sterilizable in temperatures up to 135°C. Air flow of 2.1 SCFM at maximal power of 40 psi. 360° nose cone swivel is longer, giving the user better swivel capabilities. Improved click-on and removal with no sticking. Includes 4 autoclavable, ergonomic rubber grips in assorted colors. Lube-free, no maintenance required. 2-year warranty.