It can be confusing for those new to air tools which hoses and fittings to use. There are different styles and sizes of quick-connect couplers, there are rubber, PVC, polyurethane, and hybrid rubber-PVC hoses to choose from. Which is best? It depends on your needs. In this video I'll go through some of the factors you should consider, demonstrate how the fittings work, and even show you a neat trick at the end.