these copper round rods are made of pure copper material, which are hard, solid, rust proof, , strong and long lasting; The of these copper rods is well polished with a metallic luster, and has no scratches or indentations package includes 20 pieces of solid copper rods, sufficient copper round rods to satisfy your DIY crafting and metal working needs; Manual measurement, please allow slight errors on size the pure copper rods enjoy a wide range of applications in , which can be applied for DIY metal crafts making, gear shaft, motor shaft, short support shaft, shaft sleeve model, model aircraft, model ship, model car, these copper round rods are also suitable for cutting and modeling, metal processing, machinery industry, cable and wire, communication equipment, electronics industry and so on these rods measure . 4 inches/ 10 cm in length and 0.12 inch/ 3 mm in diameter; Please check the size information to choose the desired size of copper rods you want the copper stock bar is smooth and easy to shape, you can cut the copper rod into any size you want according to actual needs and personal preference, convenient and practical, Manufacturer: Ounfhtrttk