HornTide 600/1500 Grit Combination Whetstone 7-Inch Corundum Waterstone Dual-Sided Knife Sharpening Stone Sharpener Special proportioned white corundum made waterstone, high hardness and wearproof. Suitable for use with either water or oil. Double sided sharpening. Fine texture and sharpening force ensure sharpening speed and quality. 600 grit coarse grit, used to open the blade and repair the seriously damaged edge. 1500 grit fine grinding, a necessary step to eliminate burrs of the edge. Equipped with a silica gel non-slip base for safety sharpening. Suitable for top grade kitchen cutter, outdoor knife, precision tool. Make knife sharpening easier by getting the right whetstone. HornTide combination whetstone is a traditional way to keep your knives in peak cutting condition. The HornTide combination whetstone is double-sided sharpening design, #1500 Grit for fine grinding and #600 Grit for coarse grinding. Special proportioned white corundum made waterstone, high hardness and wearproof. Fine texture and sharpening force ensure sharpening speed and quality. This premium whetstone makes a great gift for any kitchen enthusiast, knife collector or butcher. Suitable for top grade kitchen cutter, outdoor knife, precision tool. Suitable for use with either water or oil. NO MESS while sharpening &amp; it can be easily cleaned using water. The stone easily stores away in a cabinet or kitchen drawer when not in use. Combination Grit: 600/1500# Material: Aluminum Oxide  (Al2O3) Size: 18 x 6 x 2.7 cm (7.25 x 2.5 x 1.0 inches) Net weight: 545g / 1.2lbs Usage: 600# for coarse sharpening, large particles whetstone. Rougher and greater friction force, thus better open the blade and repair severely damaged tools. Usage: 1500# for finely sharpening, small particles whetstone. Dense space and fine texture, repairing small knife in a short time and consolidating blade point. First soak whetstone in water for 15 minutes. Rough sharpening first, fine sharpening second. When there is some slurry on the whetstone surface, do not scrape slurry. It helps to sharpen a knife. 1 x HornTide Combination Whetstone 600/1500 Grit Knife Sharpener 1 x HornTide Plastic Whetstone stand Place the whetstone on a  cutting board or countertop, with the coarse grit face up. A wet paper  towel underneath the stone can help keep it from sliding. With one hand, grasp the knife  by the handle and hold the edge against the stone, point-first, with the  cutting edge meeting the stone at a 15-22 degree angle. You can  stabilize the blade with your other hand. With moderate pressure, slide  the blade forward and across the the whetstone, covering the entire  length of the blade and keeping the blade flush against the stone at a  constant 15-22 degree angle. Do this 10 times, then flip the knife over and give the other side of the blade 10 strokes on the whetstone. Now flip the whetstone over to the fine grit side and give each side of the blade 10 strokes. Finish by using a sharpening steel to hone the blade, then rinse and wipe the blade dry to remove any metal particles.