Feature:
Collet/chuck For Micro Motor Handpiece
Size 3.175/3.00/2.35mm,they are for collet of micro motor handpiece.
Different shank diameter of burs(drills),different collet.You can check what size of burs(drills)you are using.Then choose 3.175 or 3.00 or 2.35mm.
Package:4PCS
Warranty: One Year! Service: Whole Life!