This RH Preyda Hard Arkansas Pocket stone is the rarest and finest abrasive stone in existence. Natural Arkansas is a whetstone that is most suitable for fine polishing and the maintenance of a fine edge on knives or tools. This is the stone you'll use every few days to polish a razor sharp edge into all of your blades. It easily fits in pockets, backpacks, or fish tackles. Honing oil and leather pouch included. Made in the USA!