Rain Bird 10-VAN Variable Arc Adjustable Sprinkler Nozzle, 8 to 10 Foot Radius - 25 Pack Easy arc adjustment from 0 to 360 degrees The textured base and collar are easy to grip, even when wet A physical left edge indicator makes it easier to feel the fixed left edge No special tools required A small twist of the center collar increases or decreases arc setting Stainless steel adjustment screw to adjust flow and radius "Captured" screw slot prevents screwdriver slippage during adjustment Ideal for watering odd-shaped areas Blue filter screen (.02" x .02") (shipped with nozzles) maint