This upgrade kit expands the capabilities of the already versatile Work Sharp Guided Sharpening System (above). On the coarser end, the 220 grit extra coarse diamond plate allows fast material removal for repairing or reshaping a dull or damaged blade, while at the finer end the 800 grit extra fine diamond plate provides a finishing surface. The leather strop and included compound gives the ability to polish for a razor sharp edge, and the 25° angle guides give a solid reference to keep your blade at an optimal angle for stropping. The diamond plates and leather strop are 6" x 1 1/4". Upgrade Kit includes an extra coarse 220 grit diamond plate, an etra fine 800 grit diamond plate, leather strop, 25° stropping guides, 5 Micron Honing Compound, and conditioner for the Leather Strop.