The Manual Sharpener That Really Works! Precision angle guides, 2-Stage sharpening and 100-Percent diamond abrasives ensure razor-sharp knives with no guesswork! Sharpens the full blade edge of fine edge (straightedge) kitchen, fishing, hunting and pocket knives. Perfect for the kitchen, tackle box, toolbox or glove compartment. Dishwasher safe. Easy to use right- or left-handed. Made in the U.S.A.