Reduced wall flexible aluminum conduit. Maintains all the strength and durability of steel, but is 2/3 lighter in weight. Designed to meet industry specifications for use with standard conduit connectors and device boxes. Meets UL (Underwriter’s Laboratories) Standard 1, NEC Article 350, and Federal Specification WW-C 566C. No. 55082003: Conduit Type: Aluminum Flexible, Diameter: 3/8″, Coil Length: 100′, Bending Radius: 2″, Minimum Internal Diameter: 0.375″, Maximum Internal Diameter: 0.393″, Minimum External Diameter: 0.560″, Maximum External Diameter: 0.610″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap No. 55082121: Conduit Type: Aluminum Flexible, Diameter: 1/2″, Coil Length: 25′, Bending Radius: 3″, Minimum Internal Diameter: 0.625″, Maximum Internal Diameter: 0.645″, Minimum External Diameter: 0.860″, Maximum External Diameter: 0.920″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap No. 55082122: Conduit Type: Aluminum Flexible, Diameter: 1/2″, Coil Length: 50′, Bending Radius: 3″, Minimum Internal Diameter: 0.625″, Maximum Internal Diameter: 0.645″, Minimum External Diameter: 0.860″, Maximum External Diameter: 0.920″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap No. 55082103: Conduit Type: Aluminum Flexible, Diameter: 1/2″, Coil Length: 100′, Bending Radius: 3″, Minimum Internal Diameter: 0.625″, Maximum Internal Diameter: 0.645″, Minimum External Diameter: 0.860″, Maximum External Diameter: 0.920″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap No. 55082321: Conduit Type: Aluminum Flexible, Diameter: 3/4″, Coil Length: 25′, Bending Radius: 4″, Minimum Internal Diameter: 0.812″, Maximum Internal Diameter: 0.835″, Minimum External Diameter: 1.045″, Maximum External Diameter: 1.105″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap No. 55082305: Conduit Type: Aluminum Flexible, Diameter: 3/4″, Coil Length: 50′, Bending Radius: 4″, Minimum Internal Diameter: 0.812″, Maximum Internal Diameter: 0.835″, Minimum External Diameter: 1.045″, Maximum External Diameter: 1.105″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap No. 55082303: Conduit Type: Aluminum Flexible, Diameter: 3/4″, Coil Length: 100′, Bending Radius: 4″, Minimum Internal Diameter: 0.812″, Maximum Internal Diameter: 0.835″, Minimum External Diameter: 1.045″, Maximum External Diameter: 1.105″, UL Listed: Yes, Pkg Qty: 1, Package Type: Shrink Wrap