Morse Cutting Tools 90883 5/16"?x?5/16"?x?1?5/8"?x?4" 4 Flute Single End Carbide Finishing Center Cutting End Mill-ALTiN Series/List #5951TFull Description Cutting Diameter (DC) 5/16" End Shape Square Connection Diameter Machine Side (DCONMS) 5/16" Usable Length (LU) 1-5/8" Depth of Cut Maximum (APMX)