Package include: (8) x Backdrop Holder (For all types of crossbars and background supports)
Great background accessory for removing wrinkles from your backdrops and keeping them from shifting or blowing if using outside or with a fan.
High-quality elastic bands: The maximum length is 15 inches, can be adjusted according to the actual demand.
Mini Clamps: Has metal teeth, firmly attach the clips to the screen.
Velcro: Quick Installation & Disassembly & Adjustment.