For the LED bulb, continuous use of up to ten thousand hours, don't need to change the pipeline, easy to use; The world dental chair two holes, four holes. Chuck Type: Push Button Working pressure: 0.25 Mpa to 0.3 Mpa Speed: 280,000-350,000R. M Spray: single water Spray Chucking power: 25-45N Bur size1.595-1.600mm Noise: 70 dB Hole: 2 Holes / 4 Holes BEARING: Stainless steel bearing.Handpiece 5 Wrench 5 Operation manual 5. Statement:The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies. Wish you have a nice day! The item "5 Pcs NSK Style Dental 45° LED Optic E-Generator 4 Holes High Speed Handpiece" is in sale since Friday, July 10, 2020. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Handpieces". The seller is "dentalsun" and is located in Shenzhen. This item can be shipped worldwide.