The Gerber DF8 knife sharpener model 22-41847 is a compact, lightweight and easy to use sharpener. This makes it great for sharpening knives or axes in the field. The diamond coated fingers are designed to reproduce the effect of using a traditional steel. One swipe through the DF8 sharpner is equal to eight swipes on traditional steels. The DF8 sharpens to a 30 degree edge quickly and efficiently while eliminating the need to ever regrind your knife.