Operating air pressure: 0.25-0.27Mpa. Sterilization by autoclave at (135) 0C.You pay us what you see on the invoice, i. Or replace item for you free of charge. Your feedback is very important for us. You will be greatly appreciated. The item "10PCS NEW PANA Air Dental Fast High Speed Handpiece Head Wrench type 4 Hole" is in sale since Tuesday, March 28, 2017. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Handpieces". The seller is "mugenli8" and is located in shanghai. This item can be shipped worldwide.