Compatible with various SmallRig matte boxes, this Top and Side Flag Bundle is effective in preventing excess light or lens flares from decreasing your image quality. The carbon fiber top flag can be easily installed onto your preexisting matte box using the included screwdriver, while the side flag attaches via slots on the filter tray. Both are easily adjustable, the top flag opening up to 180° and the side flag opening up to 135° for maximum efficiency.