The Arrow HT50MGE heavy-duty flat wire hammer tacker is a professional, heavy-duty hammer tacker with a retractable striking edge. Its durable magnesium strength provides a lightweight design, stronger construction, and better vibration absorption – and its rear-load magazine holds two full strips of T50 flat wire staples to minimize loading time. Its steel parts are furnace-hardened to provide extra durability and reliability, just like all Arrow products that professionals know and trust.