The Black Master rasp features an industry standard combining state-of-the-art sharpening and special tooth design. It also has Simonds special black coating that resists clogging, rust, and stays sharper longer. The Heller Black Master is a finely toothed rasp, similar to the Red Tang. The Black Master differs from the Red Tang through the addition of an extra coating that ensures the material is released from the rasp more easily and makes it more wear resistant. This rasp is especially well suited for hard, dry hooves.