Adjustable Screw: The sheet metal bender seamer tongs use an adjustable screw to control pressure for different jobs, providing easy, precise operation and consistent results. Sturdy Material: Built as a heavy duty welding locking plier tool from carbon steel, it offers hardness, wear resistance, and longterm durability. Wide Applications: Suitable for bending, shaping, forming, and crimping sheet metal, making tasks laborsaving and practical in various settings. Humanized Design: Flat head welding pliers ensure a firm grip on sheet metal, while the quick release lever delivers maximum locking force and durability for reliable use. Use scenarios Automotive and metal fabrication: bend and form panels, shape seams, and clamp sheets securely during patchwork or fabrication work. HVAC and metalworking: bend, shape, and crimp sheet metal for ducts, flashing, and related installations, delivering clean seams and stable joints. Welding and assembly tasks: hold and secure sheet metal in place during welding or seam work with strong locking force and easy release for efficient workflow.