【Adjustable Carbon Fiber Flags】SmallRig Mini Matte Box Pro 3680 is designed for mirrorless cameras to prevent sunlight or other light from causing glare and flare and to control images on the screen. The top flag opens 180° and its side wings extend 40° for additional light blocking; The side flag is attached to either the matte box or the filter tray via slots and opens 180° to block stray light. Note: The top flag cannot be closed shut when more than 2 filter trays are installed | 【Modular Design and Easy Installation】This mini matte box is designed with quick release modular and easy installation. It features one knob on top to fix the top flag in place, and one knob on the upper right corner to tighten the camera lens. It also comes with a storage bag for quick storage of the matte box and filter trays | 【Wide Compatibility】This mattebox is suitable for various adapter rings (Φ52-95mm, Φ55-95mm, Φ58-95mm, Φ62-95mm, 58-95mm, Φ62-95mm, Φ86-95mm, NOT included in package) and (Φ67-95mm, Φ72-95mm, Φ77-95mm, Φ82-95mm, included in package) as well as Φ95mm lenses. Its adapter rings allow quick release of circular filters (including CPL and ND) of up to Φ92.5mm | 【Two 4 x 5.65" Filter Trays Included】 It comes standard with two 4 x 5.65" filter trays, which can be quickly mounted via slots, and supports multiple plug-in filters at the same time | 【Related Accessories Recommended】 To secure lens and prevent shaking, SmallRig 15mm LWS Rod Support 2663 is recommended. If you need other filter trays, you could search "SmallRig 3320", "SmallRig 3319"; For ND filters, please go for "SmallRig 3588", "SmallRig 3589"