Double quick-change jaws: The metal shrink-stretcher features two hardened jaws, one for shrinking and one for expanding. Pre-drilled holes in the base allow easy mounting. Good shear capacity: The capacity of this metal shrink-stretcher is up to 16-gauge aluminum, 18-gauge mild steel, and 20-gauge stainless steel. Solid construction: Cast-iron housing provides a robust and durable frame, enhancing stability and operating safety. Flexible manual operation: This is a manually operated tool that uses a hand-held level to control the amount of shrink or stretch, offering flexible adjustment. Practical applications: - Automotive body panel repair and dent work on aluminum or steel, using controlled shrinking or expanding to restore shape. - Sheet metal fabrication and fitting for enclosures, cabinets, or ductwork that requires precise panel alignment. - Prototyping, repair, or hobby metalworking where accurate, adjustable shrink/stretch is needed.