... PCD, CD, ND or tungsten carbide,standard size for copper, steel, Al, carbon wire drawing. 1.We supply with PCD, CD, ND ... different materials use, such as: copper, steel, Al, carbon, etc., according to your request.3,Wire shape can be round, square, spiral or ... meter shaft, wire drawing die, cutting wheel(ceramic, glass cutting), and other precise tools. Any irregular tools relative can be customised. ...