Size: 18.00mm; Material: High Speed Steel; Finish: Uncoated (Bright); Flute Length: 3-3/4"; Overall Length: 7-1/2"; Shank Type: Round; Flute Type: Straight; Style: Hand Reamer HSS, Hand Reamer, Size 18, Flute Length3-3/4, O.A.L. 7-1/2