FALCON 6504 Primary Application: Parks, athletic fields, cemeteries, schools and commercial sites - large turf areas with spacing up to 65 feet. Stainless Steel riser option. Five year trade warrranty. Easy arc adjustment(part circle model) through top of rotor from 40degree to 360 degree. Eight color coded Rain Curtain nozzles offer greater design flexibility. Nozzles are interchangeable from the front with no special tools. Radius adjustment screw allows radius reduction up to 25% without changing the nozzle. RAIN BIRD F4FCSS FALCON ROTOR 6504 POP UP FULL CIRCLE STAINLESS STEEL LESS NOZZLE F4FCSS$28.30 RAIN BIRD F4PCSS FALCON ROTOR 6504 POP UP PART CIRCLE STAINLESS STEEL LESS NOZZLE F4PCSS$28.30 Rain Bird Comrainnoz falcon 6504 rain curtain nozzle. sold by each. no charge for these nozzles. conrainnoz