Stainless Steel Punching Driver Hydraulic Hole-Cutting Tool Hydraulic Punching Machine Hydraulic Punching Machine Hydraulic Hole Punch After thousands of punching tests, it guarantees no damage to product surfaces upon completion. Featuring a high-efficiency hydraulic pump paired with the user-friendly CP-180 pump, it replaces traditional manual hole punches. Molded from premium 40Cr steel, it delivers long-lasting durability and sharp punching performance.