... 000rpm under air-pressure of 200-250Kpa High-speed Dental Bearing of high precision level P4 (ABEC ... usable for various brands of high-speed dental turbine handpieces High-speed Dental Bearing DimensionNo.dDB13,175 mm6, ... mm7,938 mm3,571 mm Product Specifications:· Rotating speed 350,000-450,000 rpm, under air- ... for disinfection · Usable for many brands of High-speed dental drills, such as KaVo, NSK, W&H ...