●[Convenience of Use]: Multiple shapes and sizes, total 43pcs. Include impeller,rounded cylinder,cylinder,tapered & needle, with a assortment plastic box. ●[Feature]: Fit for carving and cutting stones, rocks and mortar, DIY engraving hobbies, craft modeling, home repair (wood, some plastic and dogs nails)etc. ●[1/8 shank]: Compatible with most power rotary tools. ●[Type]:Polishing Rotary Tools,Diamond Burr Accessories ●[Fit]:Carving Expert Stone Carving