... -7, P4 3.Long working life 4.High speed Dental handpiece bearingBearing feature:1.Material: AISI 440C ... temperature resistant Application: For high-speed dental turbine handpiece, such as KAVO,NSK,W&H,BIEN AIR, ... MIDWEST,STAR,FARO,ADEC,SIEMENS,LARES,etc. High speed dental handpiece ... .125".250" Flanged3.1756.352.387.50.61NSK Mach-QD (Mini) & Pana Air (Mini) (1/8")(1/4")(3/32 ...