The Grainger Approved Metal Hose is a flexible metal hose that connects air, water, oil, or gas in industrial applications. It has a stainless steel inner hose covered by a stainless steel wire braid exterior. The hose has a working pressure of 300 PSI and temperature range of -40°F to 850°F. It comes in sizes ranging from 1/4 in. to 1 in. diameter in lengths up to 25 ft. The hose ends are unfinished so proper fittings must be attached. Key features include high flexibility, crush resistance, and resistance to vibration and pressure.