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

• 【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.

Specification: Condition: Brand New Item Type: Grinding Bits Material: Diamond Color: As Pictures Shown Grit: 150 Grit Shank Diameter: Approx. 3mm/0.12in Length: Approx. 45mm/1.77in Bit Diameter: Approx. 3mm/0.12in Quantity: 30pcs / Set Package List: 1 x 3mm Grinding Bits Set (30pcs) Note: 1. The grinding head shall be clamped firmly when installing, and there shall be no pulsation! 2. The rotation speed should be as high as possible, and the linear speed should be no less than 1020 m/s.3. This product is 3mm handle, please check the clamping range of the machine before purchase!