This amazing Mini-Sharp portable folding sharpener is ready to attach to a key ring, backpack, or tackle box. It flips open and locks in place into the handle, then snaps closed for storage. Never get caught with a dull knife or tool edge. Lightweight, convenient, and useful, this sharpener makes a great gift for hunters, fishermen, campers, and all the outdoor enthusiasts on your list. Coarse: 325 mesh/45 microns. Measures 6" when open, 4" when closed.