This brush features 2 valves.  It has (2) 1/4” OD tube inlets.  An end plug installed in one of the inlets can be removed to connect brushes in a series.  An adjustable precision needle valve controls the flow rate; it has a friction lock to guard against loosening from vibration.  The brush holder has (2) 7/32" dia mounting holes.  The bristles are stainless steel (nylon is also available, part no. B309-2X00).  The total width of the brush is 4 1/2” and total height is 4 15/16”.

The shank is adjustable to accommodate up to 1/2” of bristle of wear.  Replacement brushes that slide into the holder are readily available.  This unit utilizes (2) replacement brushes, part no. B579-3.