The Malco S11 Off-Set Hand Seamer have 3-1/2" jaws that produce a uniform, accurate bend in sheet steel and non-ferrous metals with greater control and efficiency. The precision ground beveled jaws have a deeper 1-1/2" jaw depth that allows you to make tight radius bends up to 135. Designed for all the metal trades, including HVACR installation, roofing and siding applications and commercial building and remodeling.