Item Name: Spherical Burr Diamond Grind Needle Head Cutter Grindings Bit Jade Carve Tool. Quantity:9pcs/set (Include Head Diameter:1/1.5/2/2.5/3/4/5/6/8mm)Color:Silver Tone.Head Diameter:1/1.5/2/2.5/3/4/5/6/8mm100% brand new and high quality.Grit:100#.Shape:Round Ball Shape.Material:Metal,Diamond.Shank Diameter:3mm (0.08inch).Features:1.Cylindrical tip, diamond coated head.2.Can be installed on the electronic grinder, hanging mill and hand electric drill.3.Used for sculpturing, dressing, grinding and internal grinding car
