Triad-Orbit IO-GC - IO-Equipped Grip ClampIO GC each has unique articulating jaws that fit firmly onto any odd shaped object. Package Includes: IO C Clamp 5 8" female to 3 8" male adapter IO H2 Stainless 5 8" Mounting Head Synergy Series IO Equipped Grip Clamp is a patented, powerful, versatile, articulating jaw clamp fitted with Triad Orbit's IO receiver, which will securely lock down on any 2" truss or rail, creating a stable base for all T O Orbit booms, IO accessories and whatever else