High-strength alloy steel C-shaped working head, durable. Single-acting design, high-strength spring return. The punching die is made of high-carbon tungsten alloy steel, Suitable for punching of low carbon steel, soft iron board, copper bar, aluminum bar and other metals. Portable handle, easy to carry. The base has a flat design, which is stable and not easy to shake. Equipped with ZG3/8 quick connector and dust cap, 4 sets of round molds. Can be connected to various 700bar pressure hydraulic pumps. The product and mold accessories are placed in a wooden box.