About Shopping from is guarantee of top quality and excellent customer service. if you encounter bad questions please contact us, we will be in 12 hours for you to deal with any problems. About MONEY BACK GUARANTEE: If for any reason you are not completely satisfied, simply return the product for a FULL refund.. Chef Knife Sharpener - safe and easy to use! Stage 1: Coarse abrasives for sharpening and repairing dull knife blades with minimal metal removal, restore its V-shape bevel edge. Stage 2: Diamond abrasive shapes even finer facets on both sides of the blade, further polishes the micro-grooves and creates 15 degree angle with unprecedented sharpness, prolonged durability. Stage 3: Premium Edge-honing Fine ceramic for light touch-ups and smooth burr-free fine edge, extend the life of fine knives.