This rotary tool set includes a variety of grinding stones designed to cut, deburr, and polish with fine, medium, and coarse options. Suitable for cutting, polishing, and grinding, this set is perfect for jewelry and watch repair as well as other small DIY projects. The set includes a bur and is brand new in packaging. Made by Chicago Electric and manufactured in China, it comes with no seller warranty. The multicolor stones are made of high-quality materials and the UPC# is 792363949910.bin411a