Metal Conduit, Reduced Wall, 3/4 IN, Outside Diameter: 1.045 - 1.105 IN, Inside Diameter: 13/16 - 0.835 IN, 25 FT Coil, 4 IN Bend Radius, Flexible, Low Carbon Steel, Hot Dipped Zinc Galvanized, Weight: 35 LB/100 FT, UL 1, UL 1479 File Numbers E11831 And R14141, CSA File Number 15035, Federal Specification WW-C-566C, (Now Superseded By UL 1), NEC 250.118(5), 300.22(C), 348, 430.223, 501.10(B)(2), 645.5, For Electrical Power, Control And Communication Cables, Motor Leads, Listed Assemblies, Listed Wire Fixtures, Manufactured Wiring Systems