Internal Tool 93-3285 Chucking Reamers; Reamer Diameter (Inch): 21/64 ; Reamer Diameter Range (Decimal Inch): 0.3000 - 0.3499 ; Reamer Diameter (Decimal Inch): 0.3285 ; Tool Material: Solid Carbide ; Flute Type: Straight ; Coating/Finish: Bright/Unco