With its modular construction Pro Series parts have vast possibilities to change, update and reconfigure a Pro Series installation. Combine the parts with a Pro Series installation and create a new configuration.<br><br>M Internal Pole Joiner - Internal Pole Joiner, Part for Pro Series, steel, 2 pcs - black<br><br>This part number is also shiped with:<br><br>M External Pipe Cover - External Pipe Cover, cover joint gap between 2 extension pipes, black<br><br>MB Pro Series is design protected by Multibrackets This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6240-00-003-3352, indicating validated use in U.S. government and defense logistics supply chains.