Features at a glance: Deep 8 inch (203mm) Throat for Working Larger Panels Shrink or Stretch up to 16-gauge Mild Steel Hardened Steel Jaws Excellent Forming Power Includes a Shrinker Jaw, and a Stretcher Jaw The Shrinker contracts sheet metal for inside curves The Stretcher expands sheet metal for outside curves Can be Bench Mounted for easy operation Designed to make smooth radius curves without Cutting, Heating, Welding, or Hammering. Both Jaws can form curves to a radius as small as 3 inches Maximum capacity: 1.5 mm Mild Steel and 2.5 mm Aluminium Throat 8 inches (203mm) and Jaw 3.2mm clearance Spare jaws available also from us Heavy Duty Shrinker Stretcher SKU BY480 With stand version Y208 Made for FROST - BUILT TO LAST ! Read \" How Do I Use the Shrinking / Stretching Machine? \"