Siamese cable makes CCTV camera installation easier by carrying video over the coax and power over the 18/2! Dual shield RG59 coax cable features a 20 AWG copper clad steel center conductor for a truly clean video signal. RG59: 95% copper braid ensures longer distance and greater signal reliability. Use for CL1, CL2, CM, CMX and CMG installations. Swept tested to 3 GHz to ensure performance. Running "FT" count printed on cable makes measuring easy.