Features and Benefits:6” throatlets you get deep into the middle of metal sheets.Adjustable forming depth and pressureallows you to shape your material just the way you want to.Comes standard with2 sets of quick-change jaws, one for shrinking and one for stretching.Rounded jawskeep marring to a minimum(unlike square jaws). You wont have to spend as much time finishing a part afterwards.'Item Data'!This shrinker stretcher accepts an optional jaw set for aluminum to avoid marks in the soft material.Ourmost popularshrinker stretcher, the MSS-16F combines a robust16 gaugemild steel capacity with convenientfoot pedalcontrol. Plus,rounded jawshelp prevent marks and indents.