What is this?These solar panel grounding lugs collect the static electricity on PV modules and PV brackets and lead them to the ground through grounding copper wires.What will I get?The solar panel grounding lugs, we provide here, are in the size of:Material: 304 Stainless Steel, Aluminum Nickel Plated;Thread Size: M6 x 1mm(Dia*Pitch);Grounding Lug: 42x20x14mm/1.7x0.8x0.6"(L*W*H);Block Nut: 23.5x19.6x8.5mm/0.9x0.8x0.3";In the package of: 2pcs x Grounding Lugs with Nuts and Bolts.Are there any advantages of the product?The grounding lug is made of aluminum nickel plated, which assembled by stainless steel barbed shim, screws/bolts/nuts. With strong durability and corrosion resistance, are suitable for various aluminum PV rails (roof/ground/carport), C-shaped steel, U-shaped steel, H-shaped channel steel, etc.