1:5 Speed increasing handpiece turns a 40,000RPM Micromotor in to 200,000RPM The NSK Electric attachment embodies the latest technological advances and NSK know how. The X gear system delivers extremely silent operation with minimal vibration to facilitate efficient and comfortable treatment. Quality, functionality and superior performance are synonymous with the X Series. These attachments fit all E-Type Electric handpiece systems including: Satelec Hygienist, KaVo, W&H, Bien Air, Star, and Sirona. The NSK electric attachments are the most economical, technologically advanced, and least expensive to repair handpieces on the market today. Solid Titanium Body with DURACOAT, NSK's latest surface enhancement technology, takes advantage of the non allergic and biocompatible properties of titanium to further improve durability. DURACOART creates a smooth, scratch proof surface that feels comfortable in the hand. All NSK handpieces offer superior durability and long-lasting high performance even after repeated autoclaving at 135C max. NSK Quattro Water Spray - NSKs Quattro Water Spray is the worlds first 4-port spray system in its class. The increased number of ports helps cooling the entire operation area more effectively. NSK Ultra Push Chuck NSKs patented triple-grip Ultra Push Chuck enables simple one-touch bur replacement, while its auto-chuck lock mechanism automatically controls bur-retention when higher load is applied to a bur.