This is a CUJ-02 power cable connector joint from All Pond Solutions. It has a standard connection and a length of 123mm. The joint can be unscrewed without removing any wiring. These fully submersible power cable joints are rated at IP68, meaning they are dust-tight and suitable for continuous immersion in water. For safety, it is always recommended that a certified electrician installs products like these and an amp meter is used after installation to ensure it has been completed correctly. Only use with power cables that are 0.75mm standard power cable thickness (commonly known as 3 core power cable). It is recommended to complete regular checks of all included O-Rings. When reassembling, each part must be tightened as tight as physically possible to ensure the O-rings are tight to the power cable. The connector joints are weatherproof and submersible, made of high-quality material with a rubber grommets design for easy connection. Comes as a pack of 2 connector joints.