Size: 3/0Nominal Diameter Small End: .1029"Nominal Diameter Large End: .1302"Nominal Overall Length: 2-5/16"Nominal Flute Length: 1-5/16"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