Material: This tool set is made of high strength diamond particles and metal for stone, glass, ceramic, tile, metal, wood, epoxy and jewelry. They have high hardness and wear-resistance
1/8" (3mm) Shank: This set of diamond burr bits fits most 3mm (1/8") shank rotary tools and most drill or die grinders
Multi-Function Applications: Ideal for precision tasks: shaping bonsai deadwood, etching glass, carving gemstones, drilling tile, sanding resin, and masonry grinding
Portable Design: Bits organized in a reusable clear plastic case for easy storage and portability. Perfect gift for DIY enthusiasts
20-Piece Multi-Shape Set: Includes 20 diamond-coated burrs in different shapes (sphere, cone, cylinder, bullet, etc.) for versatile grinding, carving, engraving, and polishing on diverse materials