For use with Lansky Sharpening Systems. Polishing a knife edge or 'stropping' with leather will result in the most keen edge your blades have seen since they left the factory. Stropping with leather is an age old technique for polishing a blade edge that delivers unparalleled results. Already possessing the largest amount of accessories, the addition of another hone further asserts the superiority of the Lansky Controlled-Angle System.