9/16" cutting diameter, 2 flutes, single end, corner radius, uncoated.
Ground from solid carbide. This tool cuts 9/16" diameter, runs a 9/16" shank, has 1-1/4" of flute and measures 3-1/2" overall.
The corner radius takes the load off the weakest point of the tool, so the edge lasts longer than a sharp corner in the same cut.
Uncoated, so the edge stays as sharp as it can be ground — the usual choice for aluminium and other soft, sticky materials.
Free TechTips resources for end mill users — machinist tested.
More help: Milling TechTips · Troubleshooting · Carbide vs. HSS Guide