Size: 20.00mm; Material: High Speed Steel; Finish: Uncoated (Bright); Flute Length: 4-1/4"; Overall Length: 8-1/2"; Shank Type: Round; Flute Type: Straight; Style: Hand Reamer HSS, Hand Reamer, Size 20, Flute Length4-1/4, O.A.L. 8-1/2