Splice Connector - TOOGOO(R) 55 Pieces Gel Splice UR Connector 3 Port Wire Connectors Red+Clear It belongs to UR type wire conductors butt splice, which changed complicated traditional cable wire twist and soldering connection method. Insert three conductors separately into three ports without stripping conductors insulation; Crimp or squeeze the yellow button onto the inside three conductors with a pliers (here is not included.); Now you finished it! Gel-filled inside design promises an air-tight environment for conductors. Good quality and exquisitely design offer corrosion-resistant function to protect the connection against air and moisture.