Feature●0.314" diameter (+.0003" /-0" ) carbide tipped chucking reamer●6" overall length●9/32" shank diameter●4 Flutes●1 1/2" length of flute with 1/2" carbide lengthDescription Super Tool, Inc. 56553140 0.314" Diameter Carbide Tipped Chucking Reamer, Made in the USA