ProX T-QFC12X4 Set of (4) Quick 90º Folding Moving Head Clamp Adapters with T-C12 Truss Clamp 2 in. Diameter (Black)ProX T QFC12X4 Set of (4) Quick 90 Folding Clamp Adapters with T C12 Truss Clamp 2 in. Diameter Black Finish The ProX T QFC12X4 is a folding moving head adapter with an attached T C12 trigger clamp, providing the ultimate solution for securely mounting your moving head lighting units with ease. This innovative product streamlines your setup process and protects your equipment during transit. The 90 Folding Clamp Adapter features a hinge mechanism,