Interlocked Metal Hose, Interlocked Metal Hose Type Smoothbore, Hose Inside Dia. 4 in, Hose Outside Dia. 4 3/16 in, Hose Tube Material 304 Stainless Steel, Liner Material 304 Stainless Steel, Hose Length 25 ft, Temp. Range -325 Degrees to 1200 Degrees F, Bend Radius 18 in, Hose Fitting A Material 304 Stainless Steel, Hose Fitting B Material 304 Stainless Steel, Hose Fitting A Type MNPT, Hose Fitting B Type MNPT, Hose Fitting A Size 4 in, Hose Fitting B Size 4 in