Precise technology, Steady, no vibration while revolving, offering a steady operation. Suitable for any E-type handpiece accords with ISO standard. 135°C Autoclavable, suitable for both steam and chemical autoclave. Low Speed 22,000-27,000 rpm. The shank of the instrument mounted therein is 2.35 mm. Fastening of the instruments with a turning latch. For any lab or E-type motors. Working pressure: 0.3MPa (4-hole). 0.25MPa (2-hole) (Measure meter is installed at the end of air motor to measure the air pressure). Air consumption: about 56L/min. Max speed of contra angle: 25000rpm/min. Supply air pressure: 245-392KPa (2.5-4kgf/CM2). 1:1 Direct Drive. Max speed 20,000 min-1. NSK Style Dental High Speed Handpiece Push Button Type 4-Hole. Needle change type: push button. Rotate speed without load:350000 r/min. Rotate air pressure:108-245Kap. Noise level:? 68 dB. Under normal circumstances bearing life: 5-10 months. Applicable Bur: 1.6mm and should be conformed to ISO standard. Modern clipper-built designation with elegant and attractive appearance. Durable fastidiously request for designation, technology and materials. High Speed Handpiece 4-Hole. The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. You feedback is VERY important to us! We strive to exceed all your expectations and put a smile on your face. We stand behind our products and pride ourselves on OUTSTANDING customer service.