Know which hose pump to buy, here it is! It will fit your 53" rear tires of trailers even on 3 axle trailers!Looks like a very high quality item probably the best you can get very cheap for what it is the only thing is i think these are your tires only will inflate to 100 or 105 at most as trucks have an auto shut off at 125psi but the tanks average around 100psi as you keep deflating your tanks use this when you get to 90 or 95psi just call it good and move on to the next tire it's simple physics not because the product is bad I've had some tires up to 100 or 105psi but it's down to luck depending on when your pump is on your truck kicks in, 90-95 psi, just call it g u. Also if you have a double or triple trail you can have another truck driver put this tube on the red airline and use it for the rear tires or you can detach from the trailer and move your truck behind the trailer to get the inflate the rear tire.