Important: Good for house hold need, but NOT for restaurants or commercial use.Safe and Easy: This is a knife sharpener preferred by amateur. Easy to use by pulling the knife through each slot a few times to achieve a new blade.3-Stage System: Optimized knife sharpener with advanced carbide, fine abrasive, and ceramic to give your steel blades a burr-free edge easily and efficiently to prolong the life of your quality knives.Reliable Blade Sharpener: This portable knife sharpening tool is built to be strong and durable for years of reliable use, and is safe for both right and left hand.Universal Application: Perfect for sharpening straight stainless steel knives, ideal for survival knives, hunting knives, multi function knives, steak knives, filet knives, pocket knives (NOT for Scissors, Ceramic or Serrated Knives).Worry-Free Guarantee : This Ulwae Kitchen Knife Sharpener comes with an 18-month Unconditional Refund & Replacement Warranty, there is absolute ZERO risk and you have nothing to lose, our friendly customer service personal will put a smile on your face every time you get back to us.