50pcs/set Diamond Drill Bit Burr Set Grinding Head for Rotary Tool Crafts Rocks Marble Porcelain Hand Drill Jewelry Making Lapidary Engraving with Storage Box

Features

1、Suitable for use in grind the edge of glass, tile, marble, jewlery or rock.
2、Various shape and size meet your different carving need.
3、3mm shank fits most of rotary tool or bench grinder.

Package List

50 * Grinding Heads