Samfox Lapidary Drill Bits, 1mm Diamond Coated Lapidary Drill Bits, Solid Bits Needle, Agate Drill Bit for Jewelry Agate 20Pcs

• These bits are made of diamond powder for high quality, precision and durability. The bits have good machining and vibration resistance for fast and efficient machining.
• The bit has good heat resistance. It also ensures high temperature stability and wear resistance at high cutting speeds. The higher the bit speed, the better the bit effect.
• When you drill with our bit, the bit speed must be 2000/min. The bit is hardened and ground to ensure precise grinding. And it can be used many times without deformation.
• With this diamond coated drill bit, the idea of drilling holes in jewelry, ceramics, jade, onyx, glass, amber and semiconductor materials can be realized.
• If you use the drill several times, it will not be as sharp as the first time. You can cut it off with a pair of pliers and it will become sharp again.

Descriptions: Our lapidary drill bits are made from diamond powder, precise and sturdy. It is perfect for drilling holes on the jewelry, ceramic, jade, agate, glass and amber etc. Using high-speed of drilling machine to drill will lead to a good drilling effect. Please use cold water to drill. Our drill bits are very sharp and you could use them for many times. It is a good drilling tool for you to choose from. Please Kindly Pay Attention: Use cold water during the drilling hole operation Use high-speed(Up 20000 RPM) to drill holes with our drill bits. Be stable, don't shake Specifications: Condition: 100% Brand New and High Quality Material: Diamond Powder Color: Silver Length: Approx. 36mm Diameter of Shank: 0.6mm Diameter of Head: 1mm Weight: Approx. 4g Quantity: 20PCS Package Included: 20 x Lapidary Drill Bits Please Note: 1. Please allow some errors due to manual measurement 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.