Bought for my son bearer rings like many (too) teens. Yet accustomed to the electric brush before his rings, he did not use every day and sometimes prefer the manual brush. Supplied in pairs (1 normal round brush and a tiny brush to the rings) and fortunately very affordable compared to normal brushes. The normal brush does not seem to use it much compared to other conventional range and seems rather low end, it must then make the effort to change the brush and spend time to clean the rings with the small (not easy with a teenager). In short, it may seem practical and worth a try but it depends on the purpose of each, for my part I am not very convinced, and as I confirmed my orthodontist, a manual or electric toothbrush appropriate in all normal cases for rings holders.
