Product Name: NSK Low Speed Handpiece Dental Chair Unit Part Supply Rotating Speed: Low-Speed Handpiece Connection: With Quick Connector Number of Holes: Four Holes Exhaust Way: Internal Exhaust Head Diameter: Small Head Loading Way: Wrench Type Application: Adult, Child Usage Times: Non-Disposable Water Way: Outer Channel Light Way: Without Light Material: Titanium Certification: ISO9001, ISO, CE Condition: New OEM: Yes Burs Applicable: 2.335-2.355mm Ratio: 1:1 Working Pressure: 0.3-0.35MPa Speed: 20, 000-30, 000rpm Autoclaved: 135