. Inflate the tire from a safe distance, the reason is the long air hose, because Contrary to what this page claims, there is no fuser air cartridge on the product. I purchased another fuser air cartridge product to make the job. But to complicate things a little, most air tools/fittings are 1/4" NPT threads. But the male thread coming off the brass sleeve at the end of the air hose is a 1/4" compression thread. The only way I've found the way to bridge the gap is to go to my local large Going to the store and buying 2 brass fittings The other is $11 for connecting the two types of threads I really don't see the point in making the threads incompatible i.e. 1/4" NPT everywhere so you easily add an aftermarket stop-chuck. Or, more importantly, why didn't Milton just put a chuck on the product?