This snap lock punch tool is specifically designed for metal processing and connection. It can create 3/8-inch-wide impressions on metal edges, suitable for the connection of sheet metal, pipes, and ducts. It can also be used to lock the end caps of metal gutters.The tool features a power-saving lever mechanism, providing better control during operation and facilitating easy use. It is equipped with a convenient safety lock that keeps the tool closed when it is idle or stored, preventing accidental opening. The handle of the punch tool is made of TPR material, offering a comfortable grip and being slip-resistant, ensuring it won't easily slip out of the hand during work. The handle also has built-in holes for easy hanging and storage.n terms of material and craftsmanship, the tool is constructed with an all-steel structure. The hardware components are nickel-chrome plated and heat-treated, ensuring excellent durability and enabling it to be used for a long time in harsh environments. The end cap crimper is stamped from high-quality steel. The alloy steel jaws have a throat depth of 3/8 inch and are suitable for 24-gauge and 26-gauge stainless steel plates. Material: Steel Alloy.