After coring carbide matrix with the diamond bit, you can cut mild steel casing on Relsom and Maxalloy to remove the core with matching core cutter hole saws (not for cutting hardened steel).
Four flute, center cutting extra long end mill 1/4" x 6". Solid carbide and made in the USA!
These extra-long, corner radiused, four flute, solid carbide end mills feature a 30 helix angle and...