30pcs 3mm Grinding Bits Set 150Grit Tip Diamond Electric Grinder Heads Carving Tools for Jade Stone Engraving

• Stability: The CNC milling handle does not jump to ensure the stability of grinding.
• High hardness: The grinding head is treated with black nickel, which greatly improves the hardness and is easy to cut glass, stone, ceramic tiles, etc.
• Application: The torch-shaped drill is used for fine drilling with the cutting force of diamond.
• 30pcs: This set of grinding heads has 30 pieces, 150 grit drill bits, drill bit diameter 3mm, tool handle diameter 3mm.
• Advantage: The grinding head has the characteristics of high strength, high temperature resistance, durability, and will not fall off the sand.

Feature: 1. Torch-shaped drill bits for fine-detail drilling with the cutting power of diamond. 2. Black nickel treatment greatly improves hardness, easily cuts glass, stone, tile, etc. 3. CNC milling handle bar without skipping, ensures the stability of grinding. 4. High-strength and high-temperature resistant, and will not drop sand. 5. 30pcs/set, 150 grit drilling bits with 3mm head and 3mm shank diameter. 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!