The phot r studio clamp for light stands is a very handy mounting adapter that attaches to a standard light stand and mounts anything from a piece of cardboard or foam core used as a flag to a pop out style reflector or background up to 916 in thickness this reflector holder set is perfect for positioning your reflectors during a photo shoot its very easy to assemble simply attach the reflector to the stand via the reflector holder and position as needed great to use if you donrsquot h