13 PcS Universal Dental Implant Bur Drills Set /KitDrill Sizes: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) 4.3mm,(48-58) 5.3 mm.(22-28) 2.5 mm , (32-38) 3.5 mm , (42-48) 4.5 mm, (52-58) 5.5Burs are externally irrigatedDrill speeds of 800-1500 rmp..