Triangle (T) milling inserts have three sides of equal length that form three cutting points with 60° nose angles. They're used for light roughing and finishing cuts in longitudinal cutting, turn milling, facing, and chamfering applications. These indexable inserts mount to a compatible toolholder, which attaches to a milling machine. They can be rotated (indexed) to expose a fresh cutting edge when the old one dulls. They can be replaced with new inserts of the same type or different types without removing the toolholder from the machine. Indexable milling tools require fewer tool changes than solid tools in high-volume metalworking and fabrication applications with high speeds, high feeds, and difficult-to-machine materials.