Product Description Hunter I-25 Nozzle Pack Hunter 5 Standard Nozzle Set for I-25 Ultra Rotors: Nozzles are color-coded. Each standard nozzle has a number engraved on the outer surface. The numbers tell you the approximate nozzle flow-rate. Set includes 5 Standard nozzles: #7 – Orange, #10 – Light Green, #15 – Gray, #20 – Dark Brown, #25 – Dark Blue