Rainbird 10Q 10' Quarter Circle Pattern Nozzle (90 Degree) Matched precipitation rates across sets and across patterns in 5 series, 8 series, 10 series, 12 series, and 15 series 13 series nozzles meet small-area shrub or turf requirements. 16 series nozzles have a lower water flow which allows more spray heads per zone. 1808 series white filter (.035" x 035") screens (shipped with nozzles) maintain precise radius adjustment and prevent clogging. Stainless steel adjustment screw to adjust flow and radius.