I have several 90 degree valves on various equipment and it is quite difficult to install a pump on most of them. So I bought this extension for about 5 inches hoping it would last more than a few uses. It was great at first, except trying to screw a metal part onto the valve when the valve is up against the rim or device motor. Maybe. This "flexible" hose shouldn't flex, but after the second use, or maybe I should say the third use, the seal between the fitting and the hose attachment fails. I couldn't put any pressure on the hose without it leaking. Maybe for $1 it could be up and running quickly, but for the $6 it's selling for I can't recommend it.