Jewelers, gunsmiths and dental professionals all at some time have a need for small sharpening stones. Spyderco's 400F ceramic files include the following shapes: round, square, triangular, and slip. All four stones are fine-grit ready to debur hardened molds, even carbide. Sold as a set of four, packaged in a snap-front suede pouch. Clean with a plastic souring pad and powdered abrasive cleanser. They are autoclave safe.
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