The new needle brush, it's better with Deburking, operates on the machine, skillfully applies force on the copper workpiece, gently sweeps, the burr and oxide layer instantly fades, revealing a new copper color. According to the characteristics of the workpiece, you can flexibly choose dry grinding or wet grinding, and even some of the workpiece is suitable for both, and the polished copper workpiece is shining, which makes the eyes shine.