godhand sanding sheet kamiyasu sanding sponge stickerCut and attach to make your original Kamiyasu! Various objects can be used as a backing material, making your original filing tool that fits the shape of the targeted object. Just cut, attach and polish! Make your desired sanding sponge with a backing material out of all sorts of stuff! Kamiyasu is a cutting type polishing material with powerful adhesion. Thanks to its powerful adhesion, FF boards, and many other objects can use as backing materials.