The Kupo Mounting Plate with Super Knuckle Baby Receiver features a rear mounting plate with twist-Lock for Kino Flo 2ft and 4ft fixtures and mounts to any grip equipment that comes with 5/8in (16mm) stud. This heavy-duty aluminum plate features a double socket and a large ergonomic knob allowing you to lock easily with one clamping action. It can support up to 17.6lbs (8kg).