Designed especially for military use in challenging tactical environments, Bear & Son Cutlery's Gatco 60016 Knife Sharpener quickly restores a razor sharp edge to practically any pointed and/or bladed instrument - serrations, plain/fine edges, entrenching tools, scissors, darts, fish hooks, ice picks and much, much more. This portable triangular ceramic sharpener includes a built-in angle guide for flawless precision with every use, regardless of your knife sharpening experience and/or skill level. The unique triangular design features two radius sizes for sharpening both large and small serrations. Includes military-spec bead chain and clasp for easy transport. Portable, versatile, easy to use and effective, the Gatco 60016 is a must-have sharpener for all military personnel, backpackers, do-it-yourselfers, mechanics and sportsmen.