Install is simple, find where you want to locate your brake lever on your frame, trim the supplied section of pre-notched tubing to the height you desire, notch the opposite end to fit the frame (if needed), and weld it all up.
Here is a few mock-up pictures of the assembly.
You will receive 1 Machined Pivot, 1 Pre-Notched Mounting Tube, and 1 Grease Fitting. Everything else shown is for reference only.
Hopefully this will make some of your builds a little bit simpler.
As always, you can email me at Hugh's HandBuilt if you have any questions, and you can purchase these right off of the website store