Connector: M4 (Optional B2)Features:1. Push button type, Kavo type intra head2. Inner water spray, perfect cooling systerm3. LED, E-generator, self-illumination, LED bulb can be replaced ---contra angle4. Be compatible with FG bur or CA bur head (Φ1.60mm/Φ2.35mm), you can choose by yourself, usually we will send by hed for CA bur if no specified message from customer .5. Match with E-type air motor6. Imported bearingInstruction:After each treatment,Sterilizing handpiece in autoclave according to the following steps:1. Remove the bur and brush clean handpiece, clean outside of handpiece with an alcohol solution.2. Lubricate handpiece, each times drop two drops inside of air inlet pipe.3. Place into autoclaving pouch and mark.4. Autoclave the handpiece for 12 min. at 135℃