High-Quality Aluminum Construction: Solar panels centre clamps made of AL6005-T5 aluminum alloy with rustproof, corrosion-resistant and UV-resistant properties, withstands extreme temperatures and humid environments. Reinforced T-Shaped Design: Solar panel mounting brackets feature precision-engineered T-shape for perfect panel grip, with machine-punched burr-free surface and groove strip design for ultra-secure connections. Pre-Assembled for Easy Installation: Solar mounting rail connectors come with pre-drilled holes, pressure blocks and screws for tool-free installation, ensuring perfect alignment with mounting rails. Universal Applications: 30mm solar panels centre clamps suitable for yachts, RVs, residential roofs and irregular surfaces, ideal for flat/pitched roofs (tile, metal, asphalt). Complete 10-Piece Kit: Includes medium clamps with M8 mounting nuts and screws, sufficient for installation and spare needs (compatible with 30mm panel frames)., Weight: 1.1464037624 Pounds, Manufacturer: bowarepro