Get your semi Ready for the Road Ahead with an easy-to-access door, with the Buffers USA 4-Hole Aluminum Swing Door Hinge. This replacement hinge securely attaches a door to the base of a vehicle, allowing operators to open the mechanism with either their right or left hands. Engineered with ultra-strong materials to bear the weight of a swinging door. FleetPride is your First Click in Heavy Duty .