Maintain your knives in the field to the exact angle you set with your Lansky Sharpening Kit! Featuring the same four angles as the legendary Lansky Controlled-Angle Sharpening System, the QuadSharp is the perfect portable Sharpening accessory. The built-in ceramic polishing benchstone also allows the this pocket sharpener to be used as a fully functional, stand alone sharpening solution. The smallest, most versatile multi-angle knife sharpener available!