My husband had a bad habit of taking my large whetstone out of the kitchen drawer to use on garden tools and then leaving it outside. That's why I bought him this little gadget. Now my rock is safe and has a pocket tool perfect for garden shovels, secateurs and claws to name a few. (It also works better with my kitchen scissors than my large sharpening stone.) It has a rough side, a fine side, and a tactile handle. It really gets into those hard-to-reach places and works really well. We are very happy that he exists.