The QG-PRO-PM-PC is used to connect two 1.5" NPT pipes together to create dynamic lenghts for your customizeable projector mount system. Capable of holding up to 300 lbs and covered in a scratch resistant epoxy powder coating for longevity. Pipes from 3" to 3' available for purchase seperately. Available in both black and white and with opening or no opening. Includes instruction manual and presorted parts for convenient installation. Supported by QualGear 5 year warranty for Pro-AV products.