This provides the user the option of rinsing inside the bristles, over the top with the rinse bar, or both if you incorporate a Y fitting to supply water to both the inside pencil jets and the rinse bar.
So, why did we call it the Alpha brush?
Investopedia defines Alpha as:
-Alpha is used in finance as a measure of performance. Alpha, often considered the active return on investment, gauges the performance of an investement against a market index or benchmark which is considered to represent the market's movement as a whole. The excess return of an investment relative to the return of a benchmark index is the investment's alpha.