Fairly good product. The best out there though it could be improved.
Overall a fair product for the price and, honestly, the best available as yet.
The air hose is glided on a male component on the bag, with a clip to hold it in place. It works but it is difficult to glide the hose on the bag when the bag is inside the coil spring and it is not impossible that it could be pulled away. Further, when the coil spring compresses there could be a situation where the rubber ring (in black on the photo) that protects the bag and the hose could "grab" the clip. Before installation I suggest that you make the hole larger to ensure it does not happen.
A screw on interface on the bag (that you could seal with permanent liquid sealant like permatex) would be a nice improvement.
That said, that interface is less vulnerable than Firestone's interface with a push on fitting.
The hose is very flexible which is a good thing. Significantly more flexible than alternatives that you could buy.
I suggest further that you purchase a high quality push on air fitting for 90 degrees bends instead of trying to bend the cable as it will reduce the pressure to "pull" on the connection to the bag when the suspension flexes.
Finally I suggest that you purchase a high quality schrader valve with brass screw caps and a gasket inside just for the caps. That's another place where air could leak. Use the schrader valve from the kit as it has a smooth interface to the supplied hose, but use the brass screw caps with gaskets instead of the cheap supplied plastic caps.
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