Dimensions: 3″ x 1″ x 0.13″. Consists of a fine diamond stone (25 micron) and a very special ceramic stone, made of synthetic sapphire. No lubrication needed. Comes with double-coated pressure sensitive adhesive tape which allows you to fasten it to any flat spot. Will fit the F1, S1, H1, and A1 Zytel sheaths (not included). Hang packaged.