I purchased the Goodyear 045 3/8" by 50'air hose for one reason! It's the best they make. The air hose is made of reinforced rubber. I had a cheap plactic hose, knots every time you wanted to use it,or would colisipe and cut off the air supply and there you go trying to find and untangle it. Simple the rubber hose cost a little more but you will not have any of the above problems!!  I purchased my rubber Goodyear air hose from Amazon .com. Lewis Baker