Flexible Metal Hose Assembly Hose Inside Dia 4 in Hose Length 12 in Hose Tube Material 321 Stainless Steel Hose Cover Material 304 Stainless Steel Max Working Pressure @ 70 F 299 psi Temp Range 32 Degrees to 850 Degrees F Dynamic Min Bend Radius (In.) 22 in Hose Fitting A Material Carbon Steel Hose Fitting B Material 304 Stainless Steel Hose Fitting A Type M Fixed Flange Hose Fitting B Type M Floating Flange Hose Fitting A Size 4 in Hose Fitting B Size 4 in