Matthews Babysitt'r securly and quickly mounts baby plates. Features: A universal system that works with any standard baby plate, from most known manufacturers. Matthews, Avenger, American, Kupo, Impact Standard does not exceed 3.6” x 6.0” (9.2 x 15.2cm) Ideal for grips, gaffers and shooters that want to save time and space. Two different plate slots to accommodate a wide range of plates or for dual plate applications. Each BabySitt'r can still be used as a normal pancake/eighth apple Spring loaded locking system Dims per unit: 11.75” x 9.75” x 1”