Drillco 7AX124DC SA-3L6 Extra Long Carbide Burs Cylindrical Shape Double CutDrillco carbide burs are one of the most widely used and versatile cutting tools, used in virtually every industry. Manufactured from tungsten carbide, they are primarily used to remove burrs (the small flakes of metal) that often remain on the workpiece after the machining process. Solid carbide tools offer long tool life and faster cutting speeds than other substrates, but are more brittle and must be used with rigid tool holding systems. Uncoated