Polyurethane is more flexible than rubber hoses. Greater tool maneuverability in as low as -40 degrees. Polyurethane outlasts rubber hoses saving you money. Polyurethane is lighter than rubber -less operator fatigue. ID=1/2"' Length=25'; thread=1/2 NPT male swivel. Working pressure -200psi@70 degrees; Flow-135cfm @100psi.