Every feature of STNABM handpieces is precision engineered to deliver enhanced performance with the reliability and durability SANDENT users expect. The cost versus performance ratio puts the Y1BA series at the highest level within its class. Speed: 380,000480,000 min-1. Head Size: ø10.3 x H13.5 mm. The sale of this item may be subject to regulation by the U.Food and Drug Administration and state and local regulatory agencies. FDA for Curing Light: 510(K) Number: K192233, Regulation Number: 21 CFR 872.6070, Product Code: EBZ. FDA for Handpiece: 510(K) Number: K181691, Regulation Number: 872.4200, Classification Product Code: EFB, Subsequent Product Code: EGS. FDA for Scaler: 510(K) Number: K163414, Regulation Number: 872.4850, Product Code: ELC.