High quality: Made of robust industrial-grade ABS plastic, with extremely strong UV resistance, moisture resistance and drop resistance. It can also maintain maximum durability under extreme weather conditions. Specifications: Cable gland diameter from 6 mm to 12 mm, IP68 waterproof. Wide application: Widely used in the installation of solar modules on the roof of RVs, installation of solar modules on yacht decks and installation of flat photovoltaic roof mounts. Easy installation: No need to drill holes in the roof or deck of the RV during installation. It is installed with adhesive, which is safe, beautiful and easy to disassemble. Excellent waterproofness: Ultra-high waterproof level, IP68 waterproof, the waterproof silicone sealing ring design increases water resistance and has strong corrosion resistance. It can be used for a long time without deformation or yellowing.