CQ-532 #18 antenna wire. As used on Spiderbeam yagi antennas.
Polyehtylene nsulation1mm diameter (AWG 18)weight = 0.67 lbs per 100ftVery strong and durable antenna wire. Literally the best antenna wire you will ever find! This no-stretch multistrand copper-clad steel wire combines the mechanical strength of steel wire with the excellent conductivity of copper.