Sharpen your knives like a professional with Edge Master's Ultimate Corundrum Whetstone Kit. The kit features two types of whetstone designed for a specific use such as sharpening blunt edges, resharpen and removing burrs, fine sharpening, and polishing fine edges. Simply pick the grit to use according to the condition of your knife. Always ensure that the whetstones remain wet while sharpening and avoid removing the powder build-up as it helps sharpen the knife.