20pcs 3mm Shank Diamond Burr Set Drill Bits for Rotary Tool Grinding Heads

Features: *These are 120 grit and 3.0mm shank diamond grinding tools for diamond and jade carving. *Diamond burr tools for grinding engraving cutting lines polishing carving glass engraving. *Electroplated diamond grinding. *Need to be used with electric mill/hanging mill/bench mill. *Perfect for plastic wood glass metal ceramic tile marble granite stone and many other materials. *Different heads grinding bits are included Various shapes and sizes. Specifications: *Type: Diamond Grinding Burr Drill Bits *Material: Diamond *Color:Silver *Shank Diameter: 3mm *The Head Diameter: 6mm *Total Length: 45mm *Particle size:120 Grit *Function: Grinding engraving cutting lines polishing carving glass engraving *Quantity: 20pcs Package Includes: 20 x Diamond Grinding Heads Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.