The Kupo KCP-415 mount arm is designed for supporting Kupo KCP-402 T12 twin mounting plates, and the Kupo KCP-404 quad T12 mounting plates. The KCP-415 Mount plate arm can also be used with light fixtures compatible with the Kino 41K Mount Wing. The mounting plate arm featuring a steel ball head to maneuver your adaptor to all positions. At the base is a baby 16mm receiver to mount onto common light stands and C-Stands