Designed for 7" standard reflector: Godox BD-04 Barn Door Kit with Honeycomb Grid is Designed for a 7" standard reflector, and it helps you adjust the direction and shape of the photographic lighting. BD-04 is suitable for Portrait, Commercial, and Product Shooting., Bowens Mount: The Universal Design of Bowens Mount is Compatible with Various Led Video Lights, such as Godox SL-60W, MS300, MS200, SK400II, SL150W, and SL200W. etc., 4 Adjustable Leaves: BD-04 Will Result in a Shaft of Light when it is Attached to the Front of the Reflector of Your Light Source. The Size of the Shaft of Light Will Be Determined by the Opening of the Leaves, and the Distance of the Light from the Subject., With 4-pcs Color Filters: Designed for use with the barn door, it can satisfy your different demands with background colors.(Red/Yellow/Blue/Green), With Honeycomb Grid: Honeycomb is designed to control the direction of your light. The honeycomb grid will turn the strobe flash into a specular light source. It will emit a beam of light precisely where you aim.