9/64 (.140) Dia. 9/32 Flute Length 3/16 Shank 2.0 OAL Altin Coated center cutting. Often used for milling stop pin track in folding knives. LakeShore endmills are made from the highest quality micro grain carbide and coatings to deliver the performance of the big name endmills at a little guy price. 30 degree helix help maximize production in a wide range of materials. An excellent general purpose endmill made in the USA.