Designed to meet all your viewing demand for stage truss, PRB-16-01SR is designed with a versatile truss hook to ensure fast and easy installation. It can support heavy-duty projector effortlessly with no sagging. And the Lockdown handle above can help adjust the mount height to suit different ceilings. The integrated cable management keeps cable out of sight, providing the full protection. Best of all, the flexible ball joint below could be adjusted for almost any viewing angle.