This is a listing for 4 phot r clamp flex arm with 14 screw the phot r clamp flex arm with 14 screw 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 this clamp is a clamp with a 14 thread screw on the other end attached together by a flexible metal arm this flex arm has two different sides for attaching different obje