.Non-Optic / .Length(120.5mm) .Stainless Steel Body / .Hard Plating .Ceramic Ball Bearing Easy to change Ball Bearing & Cartridge .Internal Water(Quattro_4 Hole) Spray .Clean Head System .Speed: 360,000~440,000 RPM / .Weight 47g .Autoclavable .Push Button Chuck .Ergo Hand Grip Design .Coupling Connection: None(Direct connect tubing) .Hose Connection: ISO 9168 Type 2