The Work Sharp Guided Field Sharpener 2.2.1 is the complete knife and tool sharpener for field applications. Equally at home in your pack, tool box, tackle box, glove box, go bag, boat, quad, or anywhere else you keep knives and cutting tools. It is the first angle guided, 5-stage sharpening solution designed for sportsmen who need a compact, complete and versatile field sharpening tool while on the go.