Usage Tips:[Function] The garage door lift bracket is used to install on the bottom plate of the sectional garage door. The lifting wire is connected to the side pin so that the spring tension controls the up and down of the door. [Application] The bottom lift bracket can be used with sectional garage doors made of wood, fiberglass and aluminum paneling. perfect for domestic and commercial sectional doors. [ PACKAGE] The garage door bottom bracket includes a left and right pair, and the package includes 12 mounting bolts, saving time looking for extra screws from local stores. [Easy to Install] Use the included bolts to install the lift bracket on the corner of the garage door floor, insert the 7/16-inch diameter roller rod into a pair of rings, pull the wire to the side steel pin, and the installation is complete. Colour:As Shown Material:galvanized iron Package Contents: 1set * Door Bottom Lifting Brackets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.