[Durable material] This coupling sleeve is made of high quality ABS + PVC material, resistance to pressure and temperature.Rubber washer design, protects cables from water and dust. [Come with]3 sets of sealed silica gel pads of different sizes which are used on both ends of the junction box.4-14mm support cable, suitable for various wires to prevent water from entering [Easy to use]Screwdriver is provided suitable for quick connection to outdoor lighting, outdoor wiring, extending and joining cables.Easy to use and repair, without cutting cable, more convenient and safer. [Professional waterproof design] The waterproof class is up to IP68, and it has fire protection, dustproof and anti-impact function, these functions ensure that it can be used under the sun or daysrain. [Wide range of applications] Suitable for electrical junction boxes, grounding cables, outdoor sockets, electrical installations, outdoor cables or cable maintenance, such as LED display,tunnel lighting, LED street lighting, outdoor LED display, garden lighting, LED fountain, etc.