1/10pcs NSK Style Dental High Speed Air Turbine Handpiece + 4H Quick Coupling to
USA NSK Style Dental High Speed Turbine Handpiece Push Button 4 Hole Coupler YBNK4. Chuck：Push Button. Rotate Speed：300000–350000 r.p.m. Spray：Single Water Spray. Chucking Style: Autochuck. High Quality!