Aluminum alloy: The aluminum solar panel mounting guide rail is made of AL6005 T5 aluminum alloy material, which is high-strength and durable. It is rust-proof and can withstand weather conditions such as strong winds or heavy snow. These solar panel mounting bracket end clamps are made of high-quality aluminum with good luster and compact structure. The surface is produced with fine manufacturing technology and is not easy to rust or corrode, so it can serve you for a long time. Good static load distribution: The solar panel roof is mounted on rails, which reduces the suction of the roof skin through the weight of the photovoltaic system. QUICK ASSEMBLY: The solar panel roof mounting kit is very safe and easy to install for fixed hard-shell solar panels. They hold the solar panels perfectly by attaching them to the roof, to the pavement on the roof. Application: The solar roof mounting kit is installed on a walk-in trapezoidal metal sheet roof with a metal sheet exterior. It can be installed on various places such as yachts, RVs, garden roofs, garage roofs, tin sheds, flat roofs, sloped roofs, etc. EASY TO INSTALL: The aluminum solar rail connector comes as a complete kit, including self-tapping rail mounting screws, mounting rails, under-rail gaskets, panel mounting brackets that attach to the rails, and the hardware needed to put it all together. Colour:Photo Color Material:Aluminum Alloy Package Contents: 1 set x solar U-shaped rail bracket 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.