Cordless Puncher Series for Air Valve & Flat Flange is lithium‑powered, wireless, portable and stable in performance. Specially designed for on‑site punching of ventilation air valves and flat flange air ducts, it achieves accurate and neat burr‑free flange holes quickly. Without external power supply, it is lightweight and efficient, widely used in ventilation engineering, HVAC installation and on‑site duct fabrication, improving construction efficiency and installation accuracy.
