Dunli 4 in 1 Knife and Scissors Sharpener : Wolfram Steel,Emery,Ceramic Notch for Sharpening Straight Blades from Blunt to Razor Sharp (Red) Suitable for many kinds of cutting tools: such as kitchen knife,Fruit knife,and Scissors. Slot 1 for scissors sharpening, Slot 2-4(coarse sharpening,medium grinding,fine honing) for knife sharpening. Effective : Change to a Razor Sharp state with 3-5 times' pulls towards one direction. ErgonomicA stable countertop design with non-slip rubber feet allows for secure locking while using.