3/4 Dia. 1.5 Flute Length 3/4 Shank 4.0 OAL Uncoated 4 Flute. LakeShore endmills are made from the highest quality micro grain carbide 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 ballnose endmill made in the USA.