1:1 Transmission. Ceramic Bearings. Cool Touch ™ ceramic insulated push-button. PVD Coated chuck. 4 asymmetric water / air combo sprays. Sterilizable anti retraction valve. Internal Air/water coolant. Soft touch push-button chuck. The Nova’s stainless-steel construction makes it the lightest handpiece in the range. Its lightweight design improves the ergonomics and reduces wrist fatigue during day-to-day work. Speed range from 100-40,000. Carries, composite polishing and endo all-in-one. Warranty: 2 years Non-Latex