RUPP Marine Antenna Collar f/1.5" Antennas 2-Piece. 5" Antennas Replace your Rupp antenna collar without removing your antenna Made of high-impact Delrin these 2-piece clamp-on antenna collars are perfect for new or existing installations. Only available for antennas with a diameter of 1.50". Specifications for RUPP Marine 2-Piece Antenna Collar f/1.5" Antennas: Manufacturer: RUPP Marine Color: Black Fabric/Material: Plastic Features of RUPP Marine 2-Piece Antenna Collar f/1.5" Antennas Construction: Plastic Package Contents: RUPP Marine 2-Piece Antenna Collar f/1.5" Antennas RUPP Marine 09-1258-2PC: Antenna Collar f/1.5" Antennas 2-Piece