Types of Carbide Burrs Carbide burrs designed for use on specific materials and for specific applications. Carbide Burr Sets. Carbide Router Bits. Coated Carbide Burrs Types of Bi-Metal Hole Saws Bi-Metal Hole Saws and accessories. Bi-Metal Hole Saw Sets. Mounting System for Hole Saws. Hole Saw Arbors. Hole Saw Arbor Repair Kit. Arbor Adapter.