Bur Drills Dental Kit Surgical Parallel Wall Expander hex 13 Pcs

One Piece Pilot Drill
( 15-25 ) 2.0 mm,( 25-35) 3.0 mm ,( 35-45 ) 4.0 mm , ( 45-55 ) 5.0 mm.
( 18-28 ) 2.3 mm,( 28-38 ) 3.3 mm,( 38-48 ) 4.3 mm,( 48-58 ) 5.3 mm.
( 22-28 ) 2.5 mm , ( 32-38 ) 3.5 mm , ( 42-48 ) 4.5 mm , ( 52-58 ) 5.5