This 100mm ball fits Cinevate's 100mm bowl (or any other manufacturer's 100mm bowl) for use on the Ballare Dolly, Pegasus Carbon rig with 100mm bowl, or Pegasus heavy lifter kit with 100mm bowl. It is computer machined from billet aluminum, lightened, then powder coated for a lifetime of good looks. The tensioning knob is also computer machined from billet aluminum, and of course the threaded shaft is stainless steel for a corrosion proof assembly. The entire assembly is designed to be very low profile to allow use of the rig on Cinevate's Pegasus systems without interference below the rails. The ball allows you to mount any tripod head (and level it!) that attaches using the standard 3/8" thread. Any of Manfrotto's tripod heads for example, attach directly.