More Efficiency: Boost your solar panel efficiency by up to 25% with our tilting system that allows you to angle your panels towards the sun for optimal energy production Versatile Application: Our solar panel mounting kit is perfect for a wide range of off-grid systems, including Vans, boats, motorhomes, sheds, and more. (avoid the shade to receive more sunlight) Improve Adaptability: The newly upgraded ECO bracket can accommodate solar panel arrays ranging from 100W to 400W or panels with a width of approximately 45 inches.One bracket can support a ECO-WORTHY solar panel ranging from 100W to 200W Easier Assembly: Are you still worried about not knowing which screw matches which bracket? ECO's newly upgraded 45 bracket has already pre installed the main part of the bracket. After receiving the bracket, you only need to assemble it according to the instructions Simpler Installation:The newly upgraded 45 bracket is marked with an adjustment scale, which allows you to adjust the angle of the bracket more conveniently during use Package Includes: Four (4) 1140mm/45in Aluminum Mounting Rails*2, Two (2) 570mm/22.3in Aluminum Tilt Bracket*2,Four(4）M8 Flat Washers *2 & Four （4）M8 Spring Washers *2,Four（4）M8 Plastic Knob Screws *2 & Four（4）M8 Wing Nuts *2,Eight（8）M8x25mm Hex Cap Bolts *2 & Eight（8）M8 Flange Nuts *2,six（6）#5.5x1.49in Self-drDilling Cap Screws*2, Manufacturer: ECO-WORTHY