Check the listing for details. 10pcs Solar Panel End Clamp Aluminum Z Brackets for Solar Panel Mounting Bracket. Color: Silver, Condition: New. Listed at 31.77 USD. Advantage:Material - These solar panel mounting brackets are made of aluminum, which has good corrosion resistance, wear-resistance, rust resistance, and high strength, capable of withstanding weather conditions, such as high winds or heavy snow loads.Adjustable Design - The solar panel adjustable end clamps can be adjusted to different heights and positions. The adjustable mounting brackets can work for 50W to 150W panels and make the connection between the panels firmly. Suitable for frame solar panels ranging from 35 mm/1-3/8 inches to 50 mm/1-15/16 inchesEasy Installation - These solar panel clamps have pre-drilled mounting holes on the surface and include groove nuts and screws. It makes a solid connection between panels, you simply mount them in the target location.