The original toothbrushes (-heads supplied with the MEGASONEX) already were initially not very easy set up or disconnect. In Ersatzzahnbürsten but you have to almost use force to make it as far aufzustecken that the latch can be closed for this purpose. The removal of the toothbrush heads of the MEGASONEX is not easier. For children's hands impossible! And as an adult you have to have to take care not to damage the MEGASONEX even when connecting / disconnecting the brush heads.
