High quality: Made of sturdy industrial grade ABS plastic, with very strong UV resistance, moisture resistance and drop resistance, it can maintain maximum durability even in extreme weather conditions Specifications: 6mm to 12mm diameter, IP68 waterproof Wide application: widely used in installing solar panels on the roof of RVs, installing solar panels on yacht decks and installing photovoltaic brackets for flat roofs. Easy installation: No need to drill holes on the roof or deck of the RV during installation. The installation is done with adhesive, which is safe, beautiful and easy to disassemble. Excellent waterproof: very high waterproofness, IP68 waterproof. The silicone sealing ring design increases water resistance and has strong corrosion resistance. It can be used for a long time without deformation or yellowing.