This Matte Box could be adjusted the height according to the lens
of camera on the 15mm rail rod system.
Made of aluminum (mostly anodized black), ABS, and rubber.
Top and side flags are all easily removable. Fits all lenses with
filter thread not exceeding 77mm (not suitable for filter thread in
82mm or above).
Compatible with all DSLR cameras, video cameras, HDV, DV, specially
for HDSLR camera with movie function.
Rail Hole Diameter: 15 mm
Rails c-to-c distance: 60 mm
Weight : 250 g