30Pcs 150 Grit Tip Diamond Grinding Bits Rotary Burr Set Electric Grinder Carving Tools 3mm for Jade Stone Engraving Cutting Glass

【High Quality】The diamond burr set is made of high quality diamond meterial, with high-strength and high-temperature resistant, and will not drop sand. 【with Black Nickel Treatment】The rotary grinding bit set has black nickel treatment, greatly improves hardness, more convenient to use, easily cuts glass, stone, tile, etc. 【Stable Performance】CNC milling handle bar without skipping, ensures the stability of grinding, after strict quality control, you can use it with confidence 【Product Parameter】The tool handle diameter of this rotary fileis about 3 mm/0.12 inches, the length is about 45mm/1.77 inches, and the drill diameter is about 3 mm/0.12 inches. 【Application】The torch-shaped drill bits is compact design, easy to carry and store, has a wide range use, suitable for fine-detail drilling with the cutting power of diamond., Manufacturer: Fafeicy