1/4" OD x 50' SAE J844 Nylon Air Brake Tubing Suspenion Horn Train Lowrider

Did the job it was bought for, needed 30' so some is left for something else if needed.

Been using this for 4 years now, great stuff. Not recommended how I used it, but I have a 15ft stretch of this line that has held up to 350psi for months at a time. I have an air horn setup run off CO2, and I run my horn at the max my regulator can do, which is 350. The line is charged from the tank all the way to the solenoid, which is mounted directly to the horn. I'd guess burst is at least 400.

They seem to work so far, but i didn't see any DOT markings despite the listing claiming DOT certification.

Proper DOT markings.

No leaks yet, but this stuff has a pretty big bend radius. Other than that it works great.

It works as described. Its tough and I am using it on a 150psi air compressor system. The air compressor system is Viair. The lines hold up to vibrations and everyday use on my truck. They work for my air horns.

This is noticeably more flexible than the Air Lift lines that I had on my car. I don't know if that's a good thing but after a a couple thousand miles in sub freezing temperatures, I haven't had any leaks or cracks in the lines.

Got it for a train horn I bought. 50 feet was definitely long enough. Very strong tubing as well. Doesn't like to bend very much but that wasn't a problem. Didn't think my train horn would be that loud. It is. Great hose though.