Diamond Glass Jewellery Drill Bits Tipped, Solid Bits Needle, Drill Bits-20pcs 1mm Diamond Coated Gemstone Drill Bit Solid Superior Drill Bit Needle for Jewelry Agate

• High Quality: Lapidary drill bits is made from diamond powder, high-quality, high strength, high pressure bearing, precise to use, these lapidary drill bits are lightweight, compact and easy to handle
• Wide Application: Length: Approx. 36mm/1.41", Shank Diameter: 0.6mm/0.02", Head Diameter: 1mm/0.04", idea for drill holes on the jewelry, ceramic, jade, agate, glass, amber and semiconductor materials etc
• Efficient: The higher speed of drilling machine, the better effect of drilling bits. 20 x Lapidary Drill Bits, enough quantity to meet the installation needs of different projects and drill bits
• Use Skills: The speed of drilling machine need to be reached 2000 RPM when you use our drill bits to drill holes, please use cold water during the drilling hole operation
• Note: If you use the drill bit for many times, it will not be very sharp than the first time using.You could cut a little the top of it with plier, 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 ambe'r 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 shar'p 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: 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.