Description of LMT Onsrud 63 602 Uncoated 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. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. Single flute, 22 degree angle.
Haven't used yet but designed for aluminum and Onsrud have great information on the products. I'm learning to use these beats. I can't wait to start milling aluminum.
Pros
Round shanks allow for use with a variety of tool holding systems