Fixing or upgrading your garage door? These heavy-duty bottom lifting brackets are made from 13-gauge galvanized steel and fit standard 7/16-inch roller stems. The set includes left and right brackets (fasteners not included) and they're designed for most wooden, fiberglass, or aluminum sectional doors. They mount at the bottom corners where the lift cables attach, providing sturdy support for smooth door operation. Easy to install if you're handy, and built to last. Just make sure your door uses a 7/16-inch stem and pick up the appropriate screws separately. A solid, affordable replacement part to keep your garage door rolling smoothly.