This sturdy base is made from solid Aluminum. It's designed to keep the Wicked Edge sharpener perfectly steady while in use. The Aluminum Base is finished with black powder-coating, making it easy to clean. It has four rubber feet in the corners which provide stability, and protect the surface it rests on. The holes in the base are countersunk, and it attaches to the sharpener with 2 x 1" 10-32 Socket Cap Screw.