The CCH-4 is a completely closed top handle and is compatible to most of the ARRI PCA top plates (not compatible with the top plate for RED, C300 MkII, the MAP-1 and 2 from the ALEXA Mini). Numerous interfaces (1/4-20; 3/8-16; M4) for additional accessories (e.g. RMB-3) are integrated. The CCH-4 is compatible with the Sliding Adapter for the CCH-4 (K2.0019282).