This will fit up to 1 inch in diameter.  Perfect for mounting your satellite radio to your handlebar.  A good inexpensive solution.

Fits many models including:  Sportster, Sportster Replate, Sportster 3, Sportster 4, Edge, Sportster 5, Sportster 6, Starmate 3, Starmate 4, Starmate 5, Starmate 6, StarMate 7, Stratus, Stratus 4, Stratus 5, Stratus 6, Stratus 8, S50, Stiletto, Stiletto 10, Stiletto 100, Audiovox PNP1, Audiovox PNP2, Audiovox PNP3, Orbiter, Audiovox XCS9, Audiovox Xpress EZ, Audiovox Xpress R, Audiovox Xpress RC, CommanderMT, Delphi Myfi, Delphi Roady, Delphi Roady XT, Delphi Roady2, Delphi Skyfi, Delphi Skyfi2, Delphi Skyfi3, Mirge, onyX, Pioneer Inno, Pioneer Inno2, Samsung Helix, Samsung Nexus, Sportscaster, Stratus 7, XMP3, XMP3i, Xpress EZ, XpressR, XpressRC, XpressRCi