RUPP Marine Antenna Support w/6" Flat Mount & 1.5" Collar Threaded. 5" Collar A perfect blend of form and function Antenna Mounting Systems by Rupp combine good looks with innovative designs. Our locking collar holds the antenna securely yet unlocks conveniently for lowering. Made of forged and anodized aluminum for strength and long lasting beauty. Threaded mounting packages are ideal for tuna towers and tops. Specifications for RUPP Marine Threaded Antenna Support w/6" Flat Mount & 1.5" Collar: Manufacturer: RUPP Marine Color: Black Fabric/Material: Aluminum Features of RUPP Marine Threaded Antenna Support w/6" Flat Mount & 1.5" Collar Mount Type: Flat Base: No Pipe: 6" Package Contents: RUPP Marine Threaded Antenna Support w/6" Flat Mount & 1.5" Collar RUPP Marine PAK-0004: Antenna Support w/6" Flat Mount & 1.5" Collar Threaded