Big mistake, at the reception, I noticed that although the size indicated 0.8mm looks identical, the central stem seems the same size as that of my brosettes GUM, for against the hairs are HUGE and I mean it I just measure a 6mm diameter! (For comparison my brush 1mm GUM measurement maximum wide including hair diameter)
I even tried, strictly impossible to pass them between my teeth to the risk that it gets stuck.
These default brosettes has to pass between my teeth could be used and the work of precision cleaning of small objects, that's something ...