2:1 Baluns/Ununs Dog Bone Antenna Insulators (10 pack)Store/Antenna Products/Antenna Hardware, Coax, Wire, ConnectorsSKU DI-10$27.50Quantity:1 Add More Add to CartGo to CheckoutSave this product for later Favorite Favorited View FavoritesShare this product with your friendsShareSharePin itDog Bone Antenna Insulators (10 pack)Store/Antenna Products/Antenna Hardware, Coax, Wire, ConnectorsProduct DetailsVery stealthy, strong, pair of 2 PVC, 2 1/4" long. 1" wide. 1 1/8" hole separation wire antenna insulators Package of 10 insulators Note: color may be black, gray or white depending upon inventoryShow More2:1 (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).