The Lotos SS01 metal shrinker stretcher set is a great tool for metal workers who want to make the most out of their metal forming. The metal stretcher features powerful steel jaws that curve or angle mild steel up to 18 gauge or aluminum up to 16 gauge! Powder coated to resist rust, this metal stretcher can produce tight angles with little effort. This metal shrinker stretcher is ideal for auto body trim work, door panel edging and more!