Large Deck Seal for Connectors Up to 1.57 Cables from 0.47 to 0.59 - Black AluminumFor cables from 12-15mm (0.47-0.59), connectors up to A~40mm (1.57) anesthetic dome-shaped profile provide a stronger, impact-resistant design, and captive nuts in the base make for an easy assembly. Watertight InstallationTapered bung forms a watertight seal. All units are supplied with a closed-cell base seal - 100% waterproof. All models have been IP68 tested and approved.Easy and Reliable InstallationCaptive nuts make for easy assembly and also allow reliable repeat installations. Each unit is supplied with both pre-drilled and blank inner seals to make your installation as easy as possible.No Need to Remove Cable ConnectorsThe split-seal option does not require connector removal during install.Multi-Functional Dome ShapeThe aesthetic dome-shaped profile provides a stronger, impact-resistant design and the outer dome provides an additional water shield.