Features: OOTDTY Compact and sturdy, in the of an outer hexagon, it is made of tin-plated It is durable, wear-resistant and rust-proof, and can be used for a long for time. The grounding terminal is a for lightning for protection grounding component, which collects the static electricity on the photovoltaic module and the photovoltaic support and leads it to the ground through the grounding wire. When the bolts are tightened to the frame of the module, the toothed spacer on the bottom penetrates the anodized layer of the aluminum frame. It is suitable for lightning for protection and grounding applications of solar photovoltaic systems such as photovoltaic roofs, photovoltaic grounds, photovoltaic carports, and photovoltaic vegetable greenhouses. Easy to install, use a standard wrench to tighten the nut. Specifications: Material: Tinned Temperature Resistance -40c-90c Applicable 600-1500w Module Frame Thickness 0.8-4.5mm/0.03-0.18inch Module Frame Mounting Hole Diameter: 4mm(0.16inch)/5mm(0.20inch) Compatible Wire Size (mmsq/awg): 2.5/4/6/10 and 14/12/10/8/6 Package Includes: 2 Pcs Ground Lug Wire Clip Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.