Hunter Fixed Pattern Spray Nozzles Hunter Fixed Pattern Spray Nozzles feature precise edges and optimum droplet size to deliver superior matched precipitation for the most popular arc settings. While many landscapes require precise fine-tuning to achieve optimum coverage, the vast majority of spray heads call for the use of standard angle nozzles...that is, full-circle, half-circle, and quarter-circle patterns. When installing nozzles along straight runs or in areas that require 360° arcs, labor will be saved by not having to adjust each nozzle to those common patterns.