50-piece diamond drill bit set, grinding head for rotary tools, crafts, stone, marble, porcelain, handmade jewelry making, lapidary engraving, with storage box

Function: 1. Suitable for grinding the edges of glass, tile, marble, jewelry, or rock. 2. Various shapes and sizes meet your different carving needs. 3. The 3mm shank fits most rotary tools or bench grinders. Specification: Features: Suitable for grinding the edges of glass, tile, marble, jewelry, or rock. Various shapes and sizes meet your different carving needs. The 3mm shank fits most rotary tools or bench grinders. Made of high-quality metal and diamond material, superior quality and wear-resistant. Comes with a small box for convenient storage and transport. Specifications: Color: Silver Quantity: 50pcs Packing List: 50 * Grinding Heads Package List: 50 * Grinding Heads