Feature: 1. Used by the dental department for drilling and grinding teeth. 2. Improve the effect and efficiency of oral clinical treatment greatly. 3. Greatly reduce the pain of patients in the course of treatment. 4. An instrument used cleaning calculus and grind decayed teeth. 5. Stainless steel material manufacturing ensure maximum durability. Specification: Condition: 100% Brand New Item Type: Dental Handpiece Type: High Speed HandpieceMaterial: Stainless Steel Holes: 4 Holes Working Air Pressure: 220Kpa (2.1-2.35gf/c㎡) Gas Cooling Flowing: No less than 1.5l /min (0.2mpa) Clamping Force: No less than 22N RPM: 300000-400000 RPM Noise: No more than 80dB Needle: Diameter 1.598 ~ 1.600 mm standard needle (in accordance with ISO 1797-1, YY 0761.1 standard) suitable minimum length is 14mm / 0.6in, maximum length of 25mm / 1in Anti-Sterilization and Corrosion Resistance: High pressure sterilization at 135℃ Spray Hole: Single hole cooling gas Interface Type: 2/4 hole joint Net Weight: 76 g / 2.7 oz(approx.) Scope of Application: for holding high speed dental needle for drilling and grinding teeth . Package List: 1 x Dental High-Speed Handpiece (With Clip) 1 x Needle Extractor1 x Back Cover Wrench Note: Recommended sterilization temperature and time: 135℃- 15 minutes