Size: 5/0Nominal Diameter Small End: .0719"Nominal Diameter Large End: .0966"Nominal Overall Length: 2-3/16"Nominal Flute Length: 1-3/16"Has A Square Shank For Use By Hand In Tap And Reamer WrenchesDesigned To Ream And Deburr Holes By Hand Into Which Standard Taper Pins Will Fit