This is a listing for 4 phot r studio clamp with flex arm the phot r studio clamp with flex arm will clamp on to virtually anything in your photo studio to provide you with flexibility to mount your camera wherever you need it most you can use it to clamp on to light stands background supports and boom arms a set of two clamps that are attached together by a flexible metal arm they can be put to many different uses round the studio has a flexible arm length of 50cm that allows you to po