Heavy duty hinges are made of steel material. Steel hinges solid steel design, firm and durable, long service life and anti-rust features. The design of these types of hinges allows for a full 360° rotation as well as the assembly to be easily taken apart when needed. Works great as a butt hinge but also allows quick removal of doors, windows, covers or lids. Welding required for installation. They are manufactured in right-hand and left-hand configurations. When used, hinges have a fixed pin inserted onto one of the rectangular leaf components. Hinge with fixed pin and round head design for versatile applications such as steel doors, steel furniture, agricultural machinery, mechanical engineering and much more. Package includes 2 pcs heavy duty wel.