These tubes come with either an aluminum or steel barrel nut. The aluminum ones appear to be approximately 1-1/4" on the flats. The steel ones measure somewhere between 1.263" to 1.264", or approximately 33mm.
I can get a 1-1/2" crowfoot wrench pretty easily at an auto parts store. But to torque the steel barrel nut, there really isn't a reasonably priced solution, other than an adjustable crowfoot wrench. And the flats on the steel nuts are narrow, so wider wrenches won't fit.
I could use a regular adjustable wrench, but since I don't do barrel nuts more than once every couple of years or so, I don't have a "feel" for the proper torque range.
What are you guys using to get the Guntec barrel nuts tight and timed right without exceeding 80 ft-lbs?
Guntec sells a wrench made to work with the aluminum version, but nothing for the steel version. I am considering just cutting, drilling, and filing a piece of 1/4" thick aluminum to make a crow foot, but I'd rather not have to spend a few hours doing that.