BD-10 This accessory kit for the AD300pro flash is complete with all the necessary accessories for light control and allows you to unleash your creativity. Barndoors The barndoor consists of four flaps. Simply slide one or more flaps onto the light beam emitted by the AD300pro to illuminate the desired area and block the light to avoid illuminating areas that you want to remain dark. Colors The kit includes four colored filters (red, yellow, blue, and green) and a diffuser. Package contents: 4-leaf barndoor 4 colored filters Grid Diffuser Adapter