Professional Manual Sharpener creates a super sharp edge on all your knives. (15 degree and 20 degree edges) Can be used for straight edge kitchen & household knives, Santoku, Sports knives, Pocket knives and Serrated knives Separate sharpening and honing stages; Create a double beveled edge on your knife that will stay razor sharp and hold its edge longer 100-Percent diamond abrasives used in all 3 stages Easy to use- fast and safe, the ergonomic handle fits all hands and can be used with the right or left hand