FSJEE RGB LED Extension Cable Connectors--- are designed for 5050 RGB 4Pin 10mm width LED strips. ①.Connect IR/RF Controller to RGB LED strips; ②.Connect RGB strip to strip, making it possible to install your RGB LED strips in your preferred locations,fits various needs perfectly. Product Fetures: 1.The silicone rubber insulation was durable and flexible. The pure copper wires inside are tin-plated, ensuring perfect electric conductivity and longer lifespan. 2.With 12pcs 4pin male plug included. No need to weld, just plug to connect, easy to install and storage. Packing List: 2x 3.3ft extension cable; 2x 6.6ft extension cable; 1x 16.4ft extension cable 12pcs male to male 4pin plugs