Additional Info Brand: TSM Transportation: Air Place of Origin: CHINA Product Description High Quality Tungsten Steel Drill Bits for Eyewear Repair and Lens Drilling During our daily production, Tungsten Steel Drill Bits are necessary for our production. We need drill bits drill the holes of nut and cap nuts. The drill bits we use is very durable for stainless steel and nickel silver materials. We'd like to share with customers! We can tailor-make different sizes Drill Bits for you! Fast Delivery & Good Quality & Nicely Service. www.tsmscrew.com/drill-bits/14090542.html www.tsmscrew.com/drill-bits