Flexible Metal Conduit - Reduced Wall Finish Galvanized Aluminum Trade Size 1 in Inside Diameter 1 in Outside Diameter 1.38 in Bend Radius 5 in Overall Length 50 ft Flexibility Flexible Corrosion Resistant Gray Conduit Type Reduced Wall Series 5600 CSA 69271 Federal Specification AA-5810 Type II R14147 UL 1479