... vibration,super low noise 3 rotating speed 350000-450000rpm Dental Handpiece Bearing of high precision level P4 (ABEC 7 ... ),usable for various brands of high-speed dental turbine handpieces Material of Bearing Part:Bearing PartMaterial CharacteristicsOuter ringRefined ... brands of High-speed dental turbine handpieces, such as KaVo, NSK, W&H, Bien Air, Midwest, Star, Sirona, Dabi Atlante, Lares, ...