Bar Clamps for Woodworking, 4-Pack 91.4 cm Opening, Lockable F-Clamp with 272 kg Load Limit, 63.5 mm Depth, Cast Iron and Carbon Steel, Easy to Use, Wood Clamps for Woodworking Metal WorkingProduct Features High quality Materials The jaws of our bar clamps is made of cast iron, sturdy and not easy to deform. The slide bar is constructed from 45# carbon structural steel, ensuring long lasting and crack proof performance 36 inch Large Jaw Opening Our bar clamps for woodworking are ideal for various standard sized woods. The 36 inch length provides users with more adjustment space during operation, resulting in precise positioning of the