THE TSC MODEL IS CRAP! (Made by Slime, I think)
I purchased the adapter a few months ago from TSC. Finally got around to using it this weekend. Here is what I went through to get it to work.
- The "hose end" threads were cut for a 3/4" NPT pipe fitting NOT a standard garden hose fitting.

- I tried to return it for a new one at TSC (1/2 hour car ride, one way) but they did not have any in stock.
So I decided to try to make the one I had work.
- Back in the shop, I dis-assembled the adapter and replaced the "hose end" with an old garden hose end splice kit.

- Next problem was that the adapter for the valve end would not make a tight seal. The little adapter piece was cut too long and the threads bottom out before compressing the seal at the bottom.
Thus causing it to leak leak all over.
- I was able to stuff a couple extra o-rings in the bottom of the adapter and get an OK seal but it still leaked a little.
Glad that ordeal is over. Now my tires are finally filled.

No thanks to TSC and their lousy products and horrible inventory practices.