The Hole Saw Arbors are durable, heavy-duty, carbon steel arbors that come complete with pilot drills. It is the type of hand drill tool that connects a drill chuck to the actual saw itself. Also known as a mandrel. The hole saw mandrel is versatile and can be used with several Hole saw diameters. This hole saw arbor allows you to change saws easily and efficiently since there is no need to remove the arbor from the device. It can cut abrasive construction materials.