The BQLZR Diamond Coated Rotary Jewelry tool is a must-have for anyone in need of precision drilling .Based on our own experience, this tool effortlessly drills through jewelry, glass and other materials with ease, leaving a smooth and clean finish. The diamond coating ensures durability and longevity. The only downside we`ve found is that it may take some time and patience to learn how to use it correctly. Overall, we highly recommend this tool for any jewelry-making or DIY projects that require precise drilling..