This Kupo 6.0" Chain Clamp with Dual Baby 5/8" Studs is a handy piece of grip ware, especially if you're traveling light or don't have access to a light stand. The clamp is basically a large pair of pliers with an attached 6" length of chain that can be tightened and locked around round or odd-shaped objects from 1-6" in thickness using a scissor-like action. Textured to thwart rotation, the 2 attached 5/8" studs can support lights or other accessories with a matching 5/8" receivers.
