Great for all types of wire antennas - easy install with split hasp - use on wire (like in multi-point loops) or support halyards on poles, trees or other supports.
Pulley wheels may be red or white depending upon stock on hand at time of shipment.
2:1 (100:50) Baluns are useful between 50 ohm coax and 100 ohm balanced lines for loops, cubical quads, log periodics and other antennas where the impedance at the end of the feedline is 100 ohms (1/2 wavelength feedline).