4.5mm 2 Flute Ball Nose Single End Carbide End Mill, Bright Finish, Regular Length, 16mmFlute, 51MM OAL 16MM LOC,5MM SHANK,51MM OAL 30? helix, right hand spiral, right hand cut, 2 flute ball nose 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 #221-001445