547-61463687670 Features: -These stones can be used to quickly sharpen trimming knives used on leather and rubber, and as abrasive files.-Abrasive Material: Silicon Carbide.-Abrasive Trade Name: Crystolon.-Applicable Materials: Steel.-Type: TS-Shape.-Style: Roughness Grade:Medium, Inc.:Wooden Handle - Price is for Each. Dimensions: -Length: 14 3/4 in.