The Manfrotto Expan Drive Set with Grey Metal Chain enables raising and lowering background paper without lowering the support stands. It uses two expandable technopolymer inserts to support a single roll of seamless paper. Each side expands the drive inserts from 1.8 to 3 inches to grip the roll. One side has a large toothed gear with metal link chain to affix, permitting convenient raising and lowering of the background paper roll while other side has an adjustable tension drag. It accommodate cored paper rolls in any length.
This product can expose you to chemicals including lead, which is known to the state of California to cause cancer and birth defects or other reproductive harm.