1mm 2 Flute Square End Single End Carbide End Mill, Bright Finish, Regular Length, 4mmFlute, 39MM OAL 4MM LOC,3MM SHANK,39MM OAL 30? helix, right hand spiral, right hand cut, 2 flute square end center cutting single end general purpose solid carbide end mill with plain cylindrical shank. Made from C-2 grade sub-micron grain carbide with 10% cobalt content. 2 flute end mills allow for extra chip clearance in heavy cuts with high material removal rates. Applicable for slotting, plunging and profiling in steels, alloys, cast iron, aluminum and non-ferrous materials. Made in the USA. GWS/Monster Tool Part #204-001275