One adapter has a plastic cog that accepts a plastic drive chain, so that you can adjust the length of your background comfortably, and a tension control so the background doesn't unroll by itself due to gravity. The chain comes with a hanging chain weight to keep it taught.
The Background Paper Drive Set mounts to specially made hooks that offer many mounting possibilities.
Adapters expand and lock securely
Plastic cog accepts plastic drive chain to adjust length easily
Tension control keeps background tight so it doesn't unroll
Background set mounts to specially made hooks which offer multiple mounting options
