This brush is at a 45° angle.  It features a drip tube and (2) 1/8” female NPT inlets.  A pipe 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 1/2”–20 threaded shank can be secured to a mounting bracket using the plated steel nut and washer.  The bristles are nylon (stainless steel is also available, part no B1008-SR1BHW).

The brush is adjustable to accommodate up to ½” of wear.  A replacement brush is readily available.