Carving Expert Stone Carving Set Polishing Rotary Tools Diamond Burr Accessories for Carving/Engraving Stone, Rocks,Jewelry, Glass, Ceramics Dremel Rotary Tools With a approx.1/8" shank - compatible with most Dremel universal power rotary tools. Assortment of shapes and sizes include: impeller,rounded cylinder,cylinder,tapered & needle Highly recommended for carving and cutting stones, rocks and mortar, DIY engraving hobbies, craft modeling, home repair (wood, some plastic and dogs nails)etc. Package:44pcs with plastic box Sold by Carving Expert, our honor to serve for you, buy with confidence