Upgrade from you basic nozzle to this model that features incredible performance while operating in reverse. The unique design allows it to pump more water in the reverse direction, increasing speed and handling in reverse. Complete Kit. Shown installed, bowl and suction housing not included. Fits SD309, SD312, Dominator and Berkeley Pumps. Choice of 3.19", 3.25" or 3.70" insert. Click here for replacement parts.