The Woodward-Fab Super Duty Shrinker/Stretcher, No. WFSS-SD, features a heavy reinforced cast iron frame, which prevents deflection and makes the tool faster, the company says. The working 3” throat depth reaches deeper, and the tool works up to 18 gauge mild steel or 1/16” aluminum. According to the company, it can be used to form complex shapes such as windshield channels, wheel well openings or patch repair panels.