The Builders Hardware "Heavy Duty T-Hinge Set" includes one "Self Closing Heavy Duty Adjustable Spring T-Hinge" and one "Standard Heavy Duty T-Hinge". Designed for 2x4 and 4x4 post applications, these hinges are used for projects with wide mounting surfaces such as storage bins, barn doors, gates and tool boxes. Spring loaded hinges are designed to self close. Includes adjusting tool to control closing speed. Can be used for right or left hand applications. Package includes instructions and all mounting hardware.