Rainbird Xeri-Spray 180 Degree Adjustable Radius 10-32 Thread Micro Spray Xeri-Spray - Half-Circle Spray Pattern (180 Degree) Adjust flow/radius by turning integral ball valve Uniform emission pattern provides excellent distribution 10-32 self-tapping threads fit into 1/2 in. x 10-32 adapter (10-32A); 1800 Xeri-Bubbler adapter (XBA-1800); and polyflex riser (PFR-12) Ideal for ground cover, mass plantings, annual flower beds, and containers