The Ozark Trail 2-in-1 Knife Sharpener is a manual pull-through sharpener made for maintaining straight-edge knives used in fishing, hunting, camping, cooking, and everyday tasks. Its two stages handle different edge-maintenance needs: the 1,000-grit coarse stage works on dull edges, while the 1,500-grit fine stage is intended for routine upkeep. Because it's a manual design, you pull the blade through by hand with no batteries or electrical power needed. The ergonomic handle gives you a secure, comfortable grip for added control while sharpening, and the compact build tucks easily into a tackle box, toolbox, backpack, camping gear, or kitchen drawer so it can go wherever your knives do. Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects. For more information go to www.P65Warnings.CA.GOV.