This leather honing and polishing belt is made for the Ultimate Edge sharpening and honing machine. It is made from two layers of supple leather, 3.5mm thick, and double sided. This means that two grades of honing or polishing pastes can be used, the belt being flipped over to use the alternative side. The joints are butted, so there should be no high spots to disturb the process. Looked after, it should have a long life. Always use the belt in a clockwise direction, with the belt travelling away from the blade tip.