Questions about Manfrotto 046MC Expan Set + metal chain

The Manfrotto 046MC Expan Set + metal chain (100 cm) and the Manfrotto 3-fold background roller mount for wall mounting are compatible with each other. The Expan Set is designed to be mounted on a wall and can easily be used with the 3-fold background roll holder, as both systems are designed for wall mounting and the use of background rolls.

The set contains the two end pieces and the chain for one roll. Three rolls - three sets :-)

Here of course :) Check out Colorama: https://www.digitec.ch/de/Search?q=Colorama