Forget about dull knives around your home or shop. This Work SharpA(R) Benchstone Sharpener restores any blade to peak performance. Simple manual design, no electricity or high-speed motors required. Includes 20Adeg and 25Adeg guides that take all the guesswork out of getting the perfect angle. Includes 20Adeg and 25Adeg sharpening guides Medium 320-grit and fine 600-grit diamond plate Fine grit ceramic stone finishes to a keen edge Pivot response sharpening base (can be locked for a rigid sharpening surface) Anti-skid feet Includes Work Sharp's Lifetime Legacy Warranty