The Grainger Approved Metal Hose is a flexible metal hose that connects air, water, oil, or exhaust systems. It has a stainless steel inner hose covered by a stainless steel wire braid exterior and can withstand temperatures up to 850°F. This metal hose has zinc-plated steel fittings, is available in sizes from 1/4 in to 4 in diameter, and lengths up to 25 ft. It meets SAE J517 specifications for hydraulic fluid power and has a working pressure rating of up to 3000 psi. The metal hose is designed for automotive, industrial, and commercial applications.