Features: High-quality aluminum alloy material: The solar bracket components are made of anodized, high-strength, corrosion-resistant, UV-resistant, high-frequency insulation aluminum alloy material, wear-resistant and anti-embroidery; and thickened plate body, bearing up to 100kg . Easy installation: The photovoltaic aluminum alloy bracket is equipped with a complete set of accessories, and the quantity can meet your installation needs. And we will provide 3 sizes of different heights for you to choose, so that you can find the size that fits your solar panel (size introduction can be seen in the picture for details). Practical design: The surface of the side-pressed photovoltaic bracket has been punched by precision machines, polished without burrs; the double-sided concave-convex anti-skid reinforcement design can be more firmly bonded to the solar panel, even in extreme weather such as heavy rain, hurricane, severe cold, and extreme heat. It does not affect normal use and is durable! Photovoltaic bracket set: 12 set solar panel mid clamp, each set contains (1x bracket; 1x pressure block, 1x M8 socket for head cap screw, 1 reinforcement spacer), the screws provide three kinds of threads Dimensions (40mm, 45mm, 50mm), the distribution corresponds to the photovoltaic panels installed on (30mm, 35mm, 40mm). Wide application: Solar panel brackets are suitable for supporting the reinforcement between solar panel, and their application scenarios are very wide: RVs, roofs, boats, yacht decks, industrial buildings, etc. have great advantages, even with various irregular surfaces can be installed. Specifications: Material: Aluminum Alloy Color: Black/Silver Thread Length: 40mm(1.57inch)/45mm(1.77inch)/50mm(1.97inch) Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 12x Solar Panel Mid Clamp (with mounting accessories)