No-load speed reaches 390,000-430,000 rpm at 32 PSI. The operation noise level is as low as 62 dB. Individually tested and tuned to ensure vibration-free and chatter-free. The item "Lot of 3 Ceramic Dental Turbines for KaVo 642B 645B Handpiece, 90 Day Warranty" is in sale since Thursday, November 15, 2018. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Handpieces".The seller is "firstamd" and is located in Hockessin, Delaware. This item can be shipped worldwide.