CLEAN, FINISHED EDGES on leather projects are as easy as using these stylish leather burnishing bits. Secured in your rotary tool, power drill, or drill press, they finish tight corners, small holes, and edges more easily than if done by hand. The 2-piece set includes a pointed burnisher tip ideal for finishing adjustment holes on buckle-and-tongue belts; and a grooved burnisher tip with grooves of 3 different widths for finishing belt edges, bag straps, shoes, saddles, and sheaths. HARDY TROPICAL SANDALWOOD does not heat up too quickly when used at 10,000 RPM or less. It allows the leather burnishing bits to provide consistent edges on various thicknesses of leather. The 1/8" diameter metal shanks are precisely adjusted so there is no wobble during use. Designed to withstand the rotational stresses provided by power tools, these leather burnishers are an essential addition to your leatherworking tools. These long-lasting leather burnishers are compatible with other rotary tools as well as any other power tool that accepts metal shanks.