OLS Home Accent Lighting 4 PIN Connectors 20 Pack for use with OLSHA Multi Color or white strips or extensions * 4 Pin connectors are used between LED strips or controller or extensions * 4 Pin Connectors are included with kits strips and extension. Only needed if you lose them * 4 Pin Connectors have 4 pins on opposite sides and are 3/8 inches long including pins with the center black area about 1/8 inch long * Extension cables can be linked together to make longer runs or Y to split into different directions