Melin Tool CCMGN Carbide Square Nose End Mill, Long Reach, Uncoated (Bright) Finish, 30 Deg Helix, 4 Flutes, 4" Overall Length, 0.2500" Cutting Diameter, 0.25" Shank Diameter Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid toolholding systems Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications Round shanks allow use with a wide variety of toolholding systems Neck diameter reduced for clearance Used to mill deep pockets or slots where long flute lengths are not needed. The solid neck area provides reach with maximum rigidity