Features: 400/1000 grit whetstone to sharpen dull cutter, 3000/8000 grit whetstone to refine the margin. Made from white corundum, so expensive oil is not required, just use some water. Non-slip silicone holder and non-slip bamboo base to make sure the whetstone is firmly fixed. Two side leather strop for polishing cutter and removing burr. The green polishing wax is used for surface polishing of metal products and other non-metallic products. Angle guide keeps the cutter at the correct angle.