Ideal for heavy-duty cleaning applications. When connected to your pressure washer, the water flow causes the brush to rotate. Works well for cleaning road grime on trucking rigs.

Requires a minimum of 3.5 GPM to activate the brush. 1/4" MPT (ST20) & 1/4" FPT (ST21) connection. Rated to 700 PSI and 8 GPM. Orifice is 3.0 equivalent. Standard with nylon bristles. Nylon or Brass brush refills are available.