Sharpens straight blade knives, curved knives, tanto blades, filet knives, serrated knives, gut hooks, scissors, axes, hatchets, mower blades, garden shears, shovels and most any tool with a blade. Gives you fast, easy, precision results every time. Includes 2 guides, a 50 degree guide for hunting and outdoor knives (25 degrees per bevel) and a 40 degree guide for thinner blades and kitchen knives (20 degrees per bevel). Won’t burn or damage blade steel.