The Original Knife & Tool Sharpener is ideal for folks with standard knives, such as hunting, fishing, kitchen, survival/outdoor and pocket knives. This sharpener will also sharpen scissors, serrated blades and gut hooks, as well as camp and field tools everything from machetes to shovels to lawn mower blades. The sharpener comes with 2 angle guides. One guide is set at 40° (20° per side) for kitchen knives, filet knives and other thinner or smaller blades. The second guide is set at 50° (25°per side) for thicker, heavier blades such as hunting, outdoor and survival knives and also has guides for scissors and serrated blades. The Original Knife & Tool Sharpener comes with 6 abrasives belts - 2 coarse, 2 medium and 2 fine. For most folks looking to keep their knives sharp as new, the Original Knife & Tool Sharpener will meet your needs and most likely exceed your expectations. The sharpener comes with an instructional DVD to get you started and shows you how to turn dull and damaged knives into razor-sharp cutting tools quickly and easily. We always recommend practicing with inexpensive or junk knives to get used to the machine before using it on expensive knives. However, after putting a razor-sharp edge on the practice knives, youll find them as useful as any other knife you own!