The Cyclops Rails Assembly provides an alternative way to mount the Cinevate Cyclops Viewfinder while providing additional mounting options on it's 15mm standard rails for a follow focus system or mattebox.Cyclops Rails Kit Includes:15mm Universal Rails Block (qty 2)Tripod Adapter Plate15mm Solid Carbon Rails, 30cm Length (qty 2)Please Note: The Cyclops Viewfinder is sold separately.