Mount additional accessories like a viewfinder, monitor, or light onto your CX or Compass tripod fluid head with this CX Accessory Mounting Block from Miller. This solid metal alloy block attaches to either side of your fluid head, allowing you to mount up to 6.6 lb of accessories using its 1/4"-20 and 3/8"-16 mounting threads. You can even attach one to each side of the head simultaneously for even more accessory mounting options.