Product Details Made from durable steel, it features a 12-hole block with matching punch for precision forming. 12 round conical holes at 17-degree angles Includes matching steel punch for forming collets Ideal for shaping, stretching, reducing, or changing collet shapes Suitable for jewellery makers looking for reliability and value Sizes: 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 9, 10, 11, 12 mm
