Product Name:Bistrique Plated Rotary Bits Bur Set Rock Gemstone, Diamond Rotary Bits Burrs Ball Tip Lapidary Tools.
Head Diameter:4.0 mm, Shank Diameter:2.35mm(close to 3/32").
Total Length:42mm (close to 1-21/32"), Grit:150 (Medium), Color:Silver Tone.
Cylindrical tip, Tip Shape:Spherical, Round Ball Shape.
Used for sculpturing, dressing, precision grinding and internal grinding carbide in ceramic, glass, precious stone, alloy and many other abrasive materials.
