Amazon.com : 3 Sets of Hunter PGP Seal Replacement Kit for Rotors, Hunter 253400, 3 Riser Seals (181500) and 3 Spring Seats (189900), Compatible with All PGP and PGP Ultra Rotors with
Amazon.com : Hunter PGP-adj Rotor Sprinkler Heads - 6 Pack - Includes Nozzle Trees and Adjustment Tool (6) : Patio, Lawn & Garden
Amazon.com : Hunter PGP-ADJ 3/4" Rotor Sprinkler, Precision Automatic Lawn Sprinkler Head With Adjustable Arc & Watering Distance to Prevent Overwatering : Stationary Lawn And Garden Sprinklers : Patio, Lawn & Garden
Amazon.com: Hunter PGP Ultra Rotor Head w/Adjustment Key & Nozzle Rack x 5 : Patio, Lawn & Garden
Amazon.com: 3 Pack of Hunter 782900 PGP Ultra, Blue Nozzle Rack, 782900SP Nozzle Tree for Hunter Rotors, PGP Ultra and I20 Ultra Rotor Sprinkler Heads, Hunter 782900 Nozzle Rack Set, Includes LED