Briny River 30pcs 120 Grit 1/8" Diamond Drill Bits Kit 1mm 2mm 3mm Diameter Electroplated Diamond Drill for Rocks Sea Glass Shells Ceramic Jewelry Drilling Holes

Drill head diameter: 1mm, 2mm and 3mm, grit: 120 (medium), shank diameter: 3 mm (close to 1/8 inch), drilling depth: 8 mm (5/16 inch), total length: 45mm (1-3/4"). The drill bit is made of electroplated diamond and solid, providing excellent cutting performance. It is widely used in jewelry making, handicraft processing and stone carving, etc. It can easily handle hard materials such as rocks, glass, ceramics and gemstones. Package includes: including 10 pieces 1mm + 10 pieces 2mm + 10 pieces 3mm, the kit comes with a special storage box for easy storage and carrying, allowing you to easily complete various projects anytime, anywhere. During use, keep the drill hole constantly immersed in water or supply water to the drilling point, otherwise the diamond at the front end of the drill bit will wear out quickly due to high temperature. The drill bit is easy to install, please do not press hard when using it to avoid breaking or bending the drill bit., Manufacturer: Briny River