The Opteka MB360 Digital Matte Box is specially designed for all cameras with normal and wide angle lenses. The Opteka MB360 Digital Matte Box is easily detachable. It is very light in weight and is made up of strong material. The Opteka MB360 matte box is a simple and unique in design - used to reduce extra sunlight on the lens. Features: ~ Fits Rail Diameter: 0.95" (15mm) ~ Fits Rails center to center distance: 2.36" (60mm) ~ Fits lens sizes: from 43mm up to 77mm only ~ Made of ABS plastic and black anodized aluminum ~ Compatible with industry standard 0.95-inch (15mm) rods ~ Adjustable height to fit different lens sizes and diameters ~ Removable top and flank flags for easy carrying Specifications Rail Mount:15mm Rail Spacing:60mm Weight:14.8 oz (439g)