Double Wire Plug In Connector: Reduces wiring time by 70%! Just lift the handle, insert the wire, push the handle closed, hold it tight and make a solid connection. There are test holes on the of each cage. You do not need to remove the tape for electrical testing. Please note that to complete the wiring you need two connectors and then the two connectors are plugged together to complete the wiring. Widely Used: The wire connectors perfect for all vehicle, audio, video, speaker, led strip lights installation and other electrical equipments. It is widely used for low voltage solderless small gauge wire, low-loss in-home. Keep Safe: The 2-wire connector is made of Polycarbonate, which has a certain thermal stability and makes the plug and wear-resistant. The best flame retardant insulation material is used to modify copper, which has long service life, this material has a certain thermostability, and makes the plugs wear-resisting. Practical and Neat: The connector can work with solid/stranded wire types 22-18# AWG. They don't mess up the wire ends nearly as often, keep electrical boxes relatively roomy, and don't have to twist a handful of copper wire together. Reusable and efficient: Suitable for flexible wires and hard wires. Each connector is designed with for different wires. and different diameters can be connected for safety Colour:black Material:plastic Package Contents: 30 x Wire Plug-in Connector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.