The Spyderco Ceramic File Set is specifically designed for sharpening small, detailed tools like woodcarving tools, gouges, and dental devices. They are also used by gunsmiths for trigger jobs, deburring, and detail finishing. This set includes circular, square, triangle, and slip (teardrop) shapes and comes in a handy suede snap-close pouch. The ceramic files are easily cleaned with household cleanser, a scouring pad, and water. Made in the USA.