Holmes RG59 Siamese Coaxial Cable (1000 feet) Sold and Shipped Exclusively by Cables Direct Online Inner conductor: 20AWG - 0.81mm in diameter 18AWG Bare Stranded Copper Center Conductor RG59 Cable, CM, 75Ohm with 95% CCA Braided Shield, Black Outer PVC Jacket RG59B/U Siamese Cable 1000FT Reel in Box