6FT (70-55/64") T5 T8 Tube Light Fixture LED Linkable Cord, Double end Connector Cable, Power Extension Wire for LED Integrated Single Fixture, Shop light, Garage Light, Under Cabinet Light, Pack of 4

These are not 4 ft. They are about 46 1/2 inches. That may not seem like a big deal. It is a big deal when the joists in your building are 48 inches apart, and that missing 1 1/2 inches means the cords wont reach even if the lights are installed on the edge of each joist and the cord is pulled as tight as possible.

The copper strands were super thin. Based on my wire strippers, 18 AWG Stranded.Really annoying if your going to splice the ends to fit in an electrical box.The wire is about as thick as Ethernet cable, the cable clamps for Ethernet cable is super useful.

Worked well, fit OK, internal conductors are smaller than I would have expected considering the outside diameter (just has a thicker sheath, not thicker conductors in the wires). The wires themselves are undersized garbage grade chinesium copper coated aluminum. For their intended use (low power lights strung together, they work OK, but I would have expected better.

Bought these to use with Barrina T5 LED lights. They are advertised as working with them but unfortunately they will not connect. It sounds like there is possibly a change to the Barrina lights but either way they won't connect. Had to return them and try to find another option.

Connected a bunch of LED tubes to each other and a splitter for a garage project.

These cords are priceless when it comes to installing linkable LED light fixtures. 6ft is the perfect distance between fixtures for optimal lighting in a shop or garage.

The LED shop light sets I bought had short linkable cords and so I ordered these. They fit the lights and work great.

Cords don't fit well. Two of the 4 didn't work at all. Adjusting one that had poor contact caused me to break the pin connection in the light itself.