The Kupo universal projector mount features a base plate withslots cut in a vortex pattern for maximum flexibility, accommodating a wide array of projector types. Four small arms radiate from the base plate that connect to the projector. Below the baseplate is a ball joint giving you 360 degrees of freedom to position the projector. The ball joint is locked in place witha ratcheting handle . The design has flexible rigging options witha combination junior 1-1/8" pin and baby 5/8" receiver . This robust mount can support up to 33lbs.