Dental RA/HP 2.35 Burs Porcelain/Composite Polishing Kit fit Low Speed Handpiece por | Jul 17, 2026HP TYPE Fit Straight Handpiece. FDA for Handpiece: 510(K) Number: K181691, Regulation Number: 872.4200, Classification Product Code: EFB, Subsequent Product Code: EGS. Great for porcelain teeth polishing, buffing and so on.