Attaching very quickly via a thumbscrew, the Round Head Magnetic Modifier Adapter from Godox is the base component of a magnetic system that attaches simply and quickly to square-shaped speedlights from Godox, Nikon, Canon, and Sony. The modifier holds your speedlight securely by employing texturized rubber mats on its top and bottom. Separately available accessories such as barndoors, a dome, a honeycomb grid, a snoot, bounce card, and filters attach quickly to the front of the adapter via magnets.