Heavy Duty Steel: The Arc 45° Angle Support Bracket is made of rectangular steel tubing stamping and bending process, Which is classic, Elegant and durable, Providing strong support for the wood frame. The surface is painted with professional outdoor high temperature powder coating (Black Sand), Waterproof, Rustproof, And able to resist the erosion of rain and high temperature for a long time and still bright as new High-Quality Design: The one-piece design of the gazebo support bracket can be easily installed without additional cutting and sanding of the wood, eliminating the need for complicated and time-consuming installation procedures. 45° steel arc Angle support bracket can not only provide strong support for the wood frame to prevent shaking and tipping, But also enhance the three-dimensional sense of the wood frame and sense of hierarchy Size: 2''x4'' ( Rectangular Actual: 1.5''x3.2'' Base:6''x3.3'')/L23''xW6''xH3.3'', Suitable for post range: 3.5''-6'' Angle support for Gazebos, Decks, Porches, Log cabins and other wood framed structures; Qty: 4pack Quick Installation: Includes all accessory screws for immediate installation.1. Stick the angle support bracket into the wood frame and mark the pre-set holes with a marker pen; 2. Drill the pre-set holes with a hand drill to a depth of 1.57''; 3. Drill the hexagonal screws into the holes in the post and beam respectively and lock them in place to complete the installation Set Includes: 4pc x Support brackets, 32pc x Hexagonal screws, 32pc x Screw spacers, 1pc x Socket wrench, 1pc Drill bit, 1pc Installation instruction, We strive to provide you with professional quality products, if you have any questions, please feel free to contact us Attached is a detailed brackets' size description, you can choose the appropriate size according to your needs to fit our pergola bracket.