Ball - Double Cut

1/4" Ball DC Carbide Burr Long Shank SD-1L6

Double cut burrs remove material quickly from the hardest of metals, but will plug up quickly if used on softer metals  Tuff Grade Catalog 

1/4" Ball DC Carbide Burr SD-1

Double cut burrs remove material quickly from the hardest of metals, but will plug up quickly if used on softer metals  Tuff Grade Catalog