... price 4.Long life guarantee PSJPYT50(PSJPYB50) Metallic skin rocker arm brass (stainless steel) sprinklerFeatures:As soon as sprinkler stops working ... descends by itself.Cast iron skin, brass (stainless steel) rocker arm with two nozzles inside. High strength of spray, head of ... rocker arm is impact-resistant ,and all parts are corrosion-resistant.4 ...