- AWG Size 18 Copper Clad Steel- Shield Coverage O/A Foil 100%- O/A Aluminum Wire Braid 60%- RG Type 6/U- Nom. Imp. 75 Ohms- Nom. Velocity of Propagation: 84%- Insulation Type: Foam Polyethylene- Rating CATV- Jacket Type PVC- Jacket Color Black- Jacket Thickness: 0.0295 in.- UL Listing CATV swept to 3.0 GHz- Nom. Cap. 15.5 (pF/ft)