Jewelers, gunsmiths and dental professionals all at some time have a need for small sharpening stones.Spyderco's ceramic file set includes four ceramic files: round, square, triangular and slip (teardrop).All four stones are fine-grit, ready to debur hardened molds, even carbide.Clean with a plastic souring pad and powdered abrasive cleanser.They are autoclave safe and packaged in a snap-front suede pouch.Type: Sharpening SystemOpen Length: 5"Sheath: SuedeHandle Description: N/ASharpener Material: CeramicSharpener Type: Fine