Description of Dazzling JINGLING Diamond Coated Lapidary Jewelry: Sparkle with Elegance and Style!
Product Name: Lapidary Diamond Drill Bits, Diamond Drill Bits for Stone Jewelry, Gemstone Drill Bits. Head Diameter:1.2mm; Total length:42mm; Shank diameter:0.7mm; Quantity: 20Pcs. Application: Suitable for use in drill hole on the jewelry, gemstone, jade, agate, amber, beeswax, crystal. Suitable Machine: high speed bench drill, bench drill, fixed drilling machine, etc. Max speed: 18000RPM; Use with water as a lubricant.