This listing is for 1 clampthe phot r studio muslin clamp is a universal clamp which are an indispensable accessory to have with you wherever your studio is indoor or outdoor these small high quality light weight clamps allow you to clamp to just about any background including seamless paper to your cross bar the clamps make setting up your shoots and breaking them down very quick and easy they dont damage any of your equipment thanks to the rubber coating over the jaws of the clamp