I installed this mount on a 2019 Colorado driver side.
It is built well, no raw edges, nice powder coat and all the hardware came with it.
The only caveat I had was is it is a bit short if you have a Leer bed topper (100XR) mounted on the bed.
Topper has a drip edge in its design, which over hangs the bed.
I was able to get three of the four mounting holes drilled, which should be enough hold for the size of the antenna (Little Tarheel 2).
Now the debate is ordering the passenger side mount, but that's the side all the trees live to bash the antenna going down the road!