From Manufacturer
The Zacuto Halfcage Rail attaches to the Zacuto VCT Universal baseplate and creates a solid, universal cage structure around the side and top of your camera. It features a contoured wood side grip, and the built-in double-sided Z-Rail offers you the ability to add an optional top handle or Zacuto Coldshoe lock (not included). The side grip incorporates fifteen 1/4"-20 threaded accessory mounting points.
An included 5" Z-Rail attaches along the side of the VCT Universal baseplate with two 1/4"-20 screws. The Halfcage Rail then attaches that 5" Z-rail via a spring-loaded quick-release. At its most compact height, the Halfcage Rail has a clearance of 5.5". Four Allen head screws enable you to adjust the height to a 9" clearance. The side grip incorporates a 15mm rod port for attaching accessories.
