Wpbhk 3-Piece Roof Riser Bracket Set For Pergolas, Including Roof Riser Beam High Strength ? Made of high-quality metal and surface fully covered black powder coating, strong and stable for a long lasting time, even in the storm weather, still can stand outdoors stably. UPGRADED Adjustable Design ? The 2 upgrade designs are available for wood at different angles and mounting directions.Heavy duty supporting pole horizontal direction can be rotated. Easy Installation ?Is designed as a half-post opening to different sizes of wooden columns, such as 4"x4", 4"x6", 4"x8"(actual size 3.5"x3.5", 3.5"x5.5"on the market). There is no need for complicated installation process. Stable Support ?With 6 flange hex screws for wooden base and 2 bolts with non-slip nuts for locking angle, ensuring stability and durabilityconduit, ideal for long term use. The flexible design ensures a perfect fit for your specific needs.