From the Video Description:
Here is where to buy the lightbar: Black 42" 5W 80-LED High Powered Combo Beam Light Bar with Wire Harness and Switch
And here are the videos detailing the installation and build.
Join me in building a custom LED light bar mount for my truck. I start with a drawing and some pieces of metal and make it into a fully functional rig to hold my 42in LED Light Bar. The rack consists of bed rails, a headache rack, and a roof rack, all-in-one, to hold the light bar. I use 1.5in .083 wall square tubing, a 90amp harbor freight flux welder, a grinder, and a cutoff wheel to get the job done.
Here is where to buy the lightbar: Black 42" 5W 80-LED High Powered Combo Beam Light Bar with Wire Harness and Switch
And here are the videos detailing the installation and build.