Ball-nose milling inserts have a rounded nose that creates rounded profiles and contours with a rough or semi-rough finish on a workpiece. These indexable inserts mount to a compatible ball-nose end mill body, which attaches to a milling machine. The inserts have multiple cutting edges and 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 tool body 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.