Replace broke or lost antenna tubes with the Dubro Antenna Tubes. This item can be used anywhere an antenna tube is needed to support a receiver antenna wire. FEATURES: Plastic construction Black in color 1 x black antenna tubes REQUIRES: Nothing. This is a direct fit part for any boat, car, etc. that uses a standard size antenna tube. SPECS: Length: 12 1/4" (311mm) Diameter: 1/8" (3.2mm)