The Falcon Eyes LB-22H Light Boom + Sand Bag is supplied with a tube clamp and is compatible with all light stands with a diameter of 3 cm. The included tube clamp allows you to position the arm in various positions to suit your needs. The supplied sand bag acts as a counterweight and is hung from the hook located on the end of the light boom. The LB-22H for example, allows you to hang your studio lighting above the subject you’re shooting, without being visible in the photo or video. The LB-22H also provides you with greater freedom of movement around the studio or on location.