19 inch throat depth with 2-3/8 inch mouth opening Stores material inside bender which reduces handling and potential damage Lightweight, high-tech anodized alloys and computer-designed die castings Patented in.Moving Pivot Hingein. increases bending power without marring material Patented inside working pockets and 2 3/8 inch. (6,0 cm) mouth opening 180 degree hemming capability for making more rigid panels Throat Depth: 19 inch Bends Soft Aluminum: Up to .030 Bends Galvanized Steel: Up to 28 gauge Bends Copper Sheet/Coil: Up to 16 ounces Bends All Vinyl The Tapco Pro 19 Siding Brake delivers added value with more efficient bending, storing material inside the brake to reduce time-consuming handling and flipping of material. This version of this Tapco brake weighs in at just 121 pounds for maximum portability.