Coil spring on hose offers a non-slip, push-pull grip with flexibility for those hard to reach fittings even under the toughest conditions and highest working pressure 4,500 psi Inner tubing is polyamide with polyurethane sheathing, reinforced diagonally in highly tear-resistant polyester Guard spring prevents ruptures that shorten hose life 1/8" NPT(m) For power and hand operated guns