Installed in ducting as part of a dust collection system, the Nordfab Quick-Fit® Ball Joint allows up to 22° of movement off-center. The swivel movement allows flexibility in the duct, allowing it to rotate in all directions. The ball joint’s use is similar to that of a Quick-Fit Elbow but an Elbow has a set angle and direction whereas a ball joint has 360° directional capability and an angle from 0°-22°, depending on the application.