Spyderco’s Double Stuff pocket stone is double-sided, offering a medium-grit (brown) stone on one side and a fine-grit (white) stone on the other. Permanently joined by industrial adhesive, these stones create a versatile, compact sharpening tool that is ideal for touching up edges in the field. It comes with a protective suede carry case that doubles as a non-slip base during use and is easily cleaned with household cleanser, a scouring pad, and water.
Made in USA.
See in the official website: https://www.spyderco.com/catalog/details/303MF/87