WIDE APPLICATIONS: IP44 Waterproof Christmas Lights Extension Cord is perfect for all kinds of indoor and outdoor string light decorations, such as outdoor coloured lights, LED decorative lights, Christmas trees, icicle lights, curtain lights and other low-voltage LED devices. HIGH QUALITY MATERIALS: Christmas lights extension cords are made of ABS material with copper core leads, effectively preventing the wires from heating up, safe and durable. EASY TO OPERATE: The waterproof Christmas light extension cable comes with male and female wire connectors, connect both ends and screw on the included waterproof cover to connect. NOTE: Please check if the two holes of the connector fit your device prior to purchase. EXTENSION CABLE LENGTH:2-in-1 Y-Shape String Lights Splitter cable is cleverly designed to allow you to connect three strings of Christmas lights to one plug at the same time, enjoying the convenience of it all! Whether for indoor decorations or outdoor parties, you can easily create fantastic light effects. Package Includes:1 x 28CM(11in) extension cable, please check if it is compatible with your device before purchase