General description The Safest Knife Sharpener features a unique suction cup design that securely attaches to your countertop, allowing for safe and efficient one-handed sharpening. This premium tool is perfect for straight and smooth blade knives, ensuring your kitchen knives are razor sharp without the risk of injury. Technical specifications Color: Red-Black Type: Manual knife sharpener Slots: 2 (Coarse sharpening and edge finishing) Installation Wipe off any water or dust from the table and place the knife sharpener on a flat surface. Turn the knife sharpener in the direction of the arrow to lock it in place, activating the suction cup. Usage For coarse sharpening (Slot 1): Use for dull or damaged knives, pulling the knife through the slot from heel to tip 3 to 5 times. For edge finishing (Slot 2): Suitable for daily polishing, repeat the same process as above. After sharpening, wipe the blade with a damp cloth or rinse under running water. Always clean the sharpener after use