Hvan Series, 8'-10', High Efficiency Spray Nozzle, Water Saving Performance With The Convenience & Versatility Of Variable Arc Nozzles, Up To 40% More Efficient, Superior Flow Control Technology Delivers More Uniform Spray Coverage Across The Pattern, Even Close To The Head, Producing Larger Droplets That Fall Quickly & Resist Wind Blown Over Spray, With A Simple Twist Of The Nozzle Collar You Can Adjust The Spray Pattern From 0 Degree To 360 Degree, Spray Distance Is Adjusted By A Top Screw, Allowing You To Reduce Nozzle Throw Up To 25%.