SunSmart Pro 5D Mark II Rig Cage with Top Handle+15mm Aluminum Rod Block Plate, Follow Focus and Matte Box For DSLR Camera/Video and Camcorders The cage with standard 15mm rods is designed to work with most cameras or camcorders such as Canon 5D Mark II and Nikon D700 D300. DSLR Camera Cage with many standard 1/4 inch threads allows professional or amateur cameraman/filmmaker to mount accessories like microphones, monitor, sound recorders, top handle, tripod, follow focus while well protect your cameras or DVRs. The adjustable slide-mounting mechanism makes the follow focus fit a large range of lens diameters, including video camera lenses and the gear drive can also be mounted from both sides for left or right hand use. The precision-machined follow focus is made of durable anodized black aluminum and ABS and has a quick release clamp. It is compatible with all standard 15mm rods and can always provide you a slip-free, accurate, and repeatable focusing with its completely gear-driven design. The matte box, made of removable plastics flags and black anodized aluminum tripod, has an adjustable height to fit different lens sizes and diameters from 43mm up to 82mm.It can fit 15mm standard rail diameter and can be used to block the sun or other light source so as to prevent glare and lens flare.