Mostly these little helpers are used at the ivory coast tribes. This pair from the Dogon poeple belongs to a more rare category.
Despite weaving rolls have no ritual meaning they are often shaped very beautyfully like this item. It shows a typically Dogon pair-situation: close together with respectful distance.
Finest patina and finest carving - a jewel.
Info-Link:
Boris Kegel-Konietzko