Features Copper material: the grounding protection wire clamp is made of copper, high hardness is not easy to deform, does not rust and is durable. Lightning protection: This grounding protection wire clamp can effectively prevent lightning strikes and prevent damage to PV modules in extreme weather conditions. Firmly attached: When the hex screw is tightened in the frame of the assembly, the serrated spacer on the bottom penetrates into the anodizing of the aluminium frame and holds it securely in place. Easy to install: the grounding protection wire clamp is compact and flexible and is suitable for installing the PV module panel in different places. Standard size: the grounding protection wire clamp has standard specifications and the user can tighten the nut with a standard key. Specification: Item Type:Lightning Protection Cable Clamp Material: copper. Package list: 10 x lightning protection cable clamp. Package List 10 x Lightning Protection Cable Clamp