Harvey Tool 894316 | 1/4" Diameter x 1/4" Shank x 1-1/2" LOC x 4" OAL 3 Flute Uncoated Carbide Square End MillCNC ground in the USA, Harvey Tool's solid carbide Router Style Miniature End Mills are offered in 2 or 4 flute styles and feature a square profile, router style shank, and tighter overall length tolerances for quick and consistent CNC tool changes. Router style shank and tight overall length for quick and consistent tool changes Center cutting Solid carbide CNC ground in the USA Product Specifications Cutter Diameter (Inch) 0. 2500" (1 4) Length of