Splicing toothbrush / brush

The consumption of amount of toothbrushes is pretty large in one single family, and most toothbrushes were discarded after been used.
The design of this splicing toothbrush can combo two wasted toothbrushes into a bigger one, enable to clean some blind corner that can not be reached very easily in the daily life.
It also recommend people to change toothbrush frequently.