This works awesome to inflate rafts!! Yes, it voids the warranty on most brands, but dont overfill and you will be ok!! I did pop an air mattress with this, though... One of the plastic weld/seems ripped cause I didnt pay attention to the compressor compressing and it was slowly turning the mattress into a giant ball.. LOL
I got this so I could inflate my Intex tube with ease, without using a big adapter. I can screw this to the boston valve on the tube, and lock my air compressor filltube in place, and let it fill without having to hold the adapter in place.Unlike the product picture, what you get is just the adapter (the white base with the schrader black tire stem).For any DIYers out there, this is nothing more than a Boston valve cap with a tire valve stem. You can make it, I simply didn't have the parts.
This mated up to my Lightspeed air matress just fine. The downside is it easy to push the schrader valve through boston valve. One could put glue in there and not have that problem. For what it is, it works fine. What I found was my little car compressor would take 20 minutes to fill it. So...keep that in mind.