This is a video of how to make an air brake hose (for a brake chamber as an example) with a field kit. The Weatherhead hoses are for suckers, the fittings corrode and eventually don’t swivel. The field kits are plastic and brass so they will always swivel. They might not swivel easily after a few years, but they will swivel. With a length of air brake hose and a field kit, you can easily make a hose to any length you choose with only three tools. For you truck drivers out there, you could carry the hose, field kits and tools with you and reduce downtime and eliminate the need for service calls.