The 600mm/24 inch Bottom Dovetail Plate is the perfect solution when working with large and heavy zoom lenses where maximum balancing is required. An additional rod support for stabilizing the rods in the front is available for either 15mm Studio (RSB-15; K2.0000437) or 19mm Studio (RSB-19; K2.0000440). All ARRI Bottom Plates feature 3/8" and 1/4" Camloc® inserts.