The spyderco tri-angle sharpmaker 204mf is one of the most trusted and widely used knife sharpening systems in the industry, designed to make professional-quality sharpening simple and repeatable for both beginners and experienced users. Built around spyderco’s angle-controlled sharpening system, the sharpmaker removes the guesswork from sharpening by helping users maintain a consistent edge angle with minimal learning curve. The system uses keyed holes in a durable abs plastic base to position the ceramic sharpening stones at either a 30 inclusive angle 15 per side or a 40 inclusive angle 20 per side , making it easy to sharpen folding knives, fixed blades, kitchen knives, scissors, awls, fishhooks, and even serrated edges. Simply hold the blade vertically and draw it down the stones to achieve a sharp, consistent edge. The sharpmaker includes two sets of high alumina ceramic stones: medium grit brown stones for restoring dull edges and fine white stones for refining and polishing. The triangular stone shape allows users to sharpen both plain and serrated blades effectively using either the flat sides or corners of the stones. Aluminum safety rods help protect hands during sharpening, while the entire system packs neatly into the self-contained storage base and lid. Highly regarded throughout the knife community for its ease of use, versatility, and long-term durability, the spyderco sharpmaker is an excellent sharpening solution for maintaining everyday carry knives, pr...