Wooden Camera Crossbar V2 Kit. The Crossbar V2 Kit from Wooden Camera consists of a NATO rail on top with safety pins on each end, 1/4"-20 and 3/8"-16 holes for attaching accessories, 1/4" pass-through slots for attaching to the cheese plates and rod clamps, and ARRI standard rosettes on each end for attaching Rosette Arms and Rosette Grips..