esptrs 20PCS 1mm Coated Lapidary Drill Bits Solid Bits Needle For Jewelry Agate Drill Bits Lapidary Hole

Descriptions: Our lapidary drill bits are made from 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 to a drilling effect. Please use cold water to drill. Our drill bits are very and you could use them for many times. It is a drilling tool for you to choose from. Features: Made from powder high-quality precise and durable to use. Idea for drill holes on the jewelry ceramic jade agate glass amber and semiconductor materials etc. The higher speed of drilling machine the better effect of drilling bits. The speed of drilling machine need to be reached 20000 RPM when you use our drill bits to drill holes. If you use the drill bit for many times it will not be very than the first time using.You could cut a little the top of it with plier it will become again. 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: and Material: 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.