Fangrui Product Details Double Wire Plug In Connector: Reduces Wiring Time By ! 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 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-. The 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