CAMVATE Universal Super Crab Clamp and 10" Articulating Magic Arm Bundle (Red Body) 0.4 to 2.1" Clamping Range, Multiple 1/4"-20 and 3/8"-16 Threads, 10" Magic Arm with 1/4"-20 Screws, Rubber-Padded Clamp Jaws MONITORS PROF-Articulating Arms