The phot r studio clamp with a light stand attachment 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 it is an especially useful accessory for photographers that work alone and need help supporting a reflector the holder has a 58rdquo receiver so it can be attached to any light stand with a standard 58rdquo top stud this reflector holder set is p