The Hose Master Interlocked Metal Hose is a 4 inch diameter metal hose with a working pressure of 300 psi. It is made from 304 stainless steel with a smooth inner wall and is interlocked for flexibility. This metal hose has reusable end fittings and is recommended for applications like exhaust extraction, fume removal, material handling, air and water flow. It can withstand temperatures up to 1000°F. The hose is sold by the foot, with a minimum order length of 3 feet.