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Twist&Brush, A Kind of Reverse, Toothpaste-Filled Fountain Pen for Teeth. Imagine a beautiful old steel fountain pen, with its twist-to-suck pump that slurps in ink.
Twist&Brush complicates an easy chore\nImagine a beautiful old steel fountain pen, with its twist-to-suck pump that slurps in ink. Now imagine that instead of twisting the reservoir to fill the ...