HornTide 1000/4000 Grit Combination Whetstone Two-Sided Knife Sharpener 7-Inch Sharpening Stone Plastic Stand Included Two piece precision sharpening 1000/4000 combination grit for enhanced performance. Special proportioned white corundum made waterstone, high hardness and wearproof. Fine texture and sharpening force ensure sharpening speed and quality. Suitable for top grade kitchen cutter, outdoor knife, precision tool. HornTide QC passed. Whetstone stand included and hand wash only. Use with either water or oil. 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, #4000 Grit for fine grinding and #1000 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: 1000/4000# Material: Aluminum Oxide (Al2O3) Size: 18 x 6 x 2.7 cm (7.25 x 2.5 x 1.0 inches) Net weight: 585g / 1.3lbs Maintenance: Hand Wash with Water Usage: 1000# finely sharpening, small particles whetstone. Dense space and fine texture, repairing small knife in a short time and consolidating blade point. Usage: 4000# for refined sharpening, honing the edges to a smooth finish. 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. 1x HornTide Combination Whetstone 1000/4000 Grit Knife Sharpener 1x 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.