Size: 4.50mm; Material: High Speed Steel; Finish: Uncoated (Bright); Flute Length: 1-5/8"; Overall Length: 3-1/4"; Shank Type: Round; Flute Type: Straight; Style: Hand Reamer HSS, Hand Reamer, Size 4.5, Flute Length1-5/8, O.A.L. 3-1/4