I made an air down tool that cost practicly nothing. What I did was take a 1/4 npt ball valve, 2 1/4 npt t's 4 1/4npt hose ends , 2 clip on air chucks, 15' of air hose and an 1/8 npt shrader valve. This is how I put it together. Tee with the barbed hose ends on either side. the midlle port I screwed on another Tee, with the middle port having the shrader valve, the bottom of it has the ball valve threaded into it with a QD nipple on the end of that. I think i will put another tee in line with a gage in it. Then with the hose and the clip on air chucks you just open the ball valve and dump 2 tires at once, shut it and the pressure will equalize for both tires. Use the shrader valve to air them back up, or if the air hose doesn't have the air chuck permanantly fixed to the end you can also plug the air line into the bottom of the ball valve, open it and fill the tires that way. No pics either, I might take some but it would be awile before I could get them devoloped.