30Pcs Diamond Burr 3mm Drill Bit Diamond Burr Shank Rotary Drill Bits for Glass Gemstone Metal Grinding Jewelry Rotary Engraving Tool Rotary Tool Accessory

General Description

30 diamond bits suitable for detailing, cutting, engraving, carving, retouching and finishing, for working on glass, metal, stone, ceramics, wood and plastic. Recommended for jewelers, lapidaries, hobbies and crafts, model making, as well as household repairs.

Technical specifications

• Material: alloy coated with diamond particles
• Shank: 3 mm
• Quantity: 30 pieces (10 pieces of 1 mm, 10 pieces of 2 mm, 10 pieces of 3 mm)

Usage

Fine engraving bits require experience; it is possible to break a few strands during practice. Use with water and do not let dry.