The Klein Tools Offset Hand Seamer helps make working with sheet metal, duct work, non-ferrous metals and tubing easy. This tool helps to help bend, seam and flatten sheet metal. The hand seamer is designed to be used overhead or in confined areas. The seamer is made of stainless steel and has a nickel-chrome plated finish for durability. The seamer has a compound-leverage design which helps give an accurate and powerful grip for making powerful seams.