2" 400 series with plastic nozzle. Durable, noncorrosive plastic construction. 1/2" FNPT connection. Brass flow adjustment screw. Stainless steel retraction spring. 2-1/8" pop-up clearance. Inlet filter basket prevents debris from clogging nozzle. Wiper seal keeps out sand and grit. Extra heavy cap and heavy-duty ABS canister. Hard tops on select heads reduce mower damage.