Dedolight flexible coupler with 16 mm studs on both ends. Length 29 cm (11.4 inch).
The main reflector is attached to a lighting stand with a reflector lock and a Lightstream articulating arm in the usual way. The second reflector lock can be slid onto the main reflector to hold a short flexible extension. This enables two reflectors to be used side by side on just one light stand, saving setup time and space.