... miniature ball bearing,to be perfectly usable for high-speed dental turbine handpiece Dental handpiece bearingProduct Specifications*Rings AISI 440C stainless steel: 9Cr18 for inner ... , High-temperature resistant*Perfectly usable for many brands of High-speed dental turbing handpiece, such as KAVO,NSK,W&H,BIEN AIR, MIDWEST ... .938 * 3.175 * 2.787.938 * 3.175 * 2.38 Dental Handpiece Bearing