10 Hunter Sprinkler : 5 spring seat 189900 & 5 Riser Seal 181500 for PGP /Ultra
Hunter 181500Sp Riser Seal for PGP and PGP Ultra. Besides fitting all models of PGP pop-up rotors this fits the I-20-12 (12" pop-up model only). spring seat 189900SP for PGP and PGP Ultra. For Hunter PGP Series Rotors.