The Kupo KSF-25 11kg Shot bag allows you to weigh down light stands by just drape it onto the c-stand leg, or across the cross-member of the light stand. This premium Kupo shot bag is made of 1000 denier black textured nylon for durable use day in, day out. A shot bag offers a variety of uses including offsetting a boom arm, ballast for a tripod or light stand base or wrapped midway on a stand handle to offset the weight of the light. The shot bag is pre-filled with 2mm steel shot balls to provide a dense counterweight. The shot bag is sealed at the factory so as to lever leak. The two wing design allows it to drape perfectly over light-stand and C-Stand legs.