Features: It is assembled by for lightning- for protections grounding thorns and stainless steel screws, which is durable, wear-resistant and rust-proof, and can be used for long-time. The grounding-terminal is a for lightning- for protections grounding component that collects the static-electricity on the photovoltaic modules and the photovoltaic support and introduces it to the ground through the grounding copper wire. Suitable for most frame solar panel on the market and matches-with common photovoltaic roof brackets aluminum rails, ground brackets aluminum rails, photovoltaic sheds and C-shaped steel (U-shaped steel) rails. It is suitable for lightning- for protections and grounding applications of solar photovoltaic system such as photovoltaic roofs, photovoltaic grounds, photovoltaic carports, and photovoltaic vegetable greenhouses. Easy installation without too many tools, allowing a variety of ground conduction installation methods. Specifications: Material:Aluminum Quantity:2pcs,4pcs,6pcs,8pcs(optional) Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1Set (2pcs/4pcs/6pcs/8pcs) Ground Lugs