I have been a dealer mechanic for 40 years and have had many Milton tire inflators over the years. It claims to have a 1/4" inlet, but it's actually an odd size, closer to 1/8" so changing hoses isn't possible without using other fittings. After two trips to Home Depot, I was finally able to install the hose I wanted. This is a joke, it is very difficult to install the valve stem. This will be the last Milton I ever bought.