Gilmour, Heavy Duty, Metal, Width Control Oscillator, With On/Off Sprinkler, On/Off Flow Control Eliminates Trips From Sprinkler To Spigot & Allows For Fine Tuning Of Water Flow At The Sprinkler, Width Control Tabs Allow Each Side To Adjust Independently, For Maximum Customization, Easily Move The Tabs Into The Position That Best Fits The Desired Coverage Area, Length Control Collars Provide For Easy, Independent Customization On Both Sides With A Smooth, Effortless Slide, Aqua Coded Touchpoints To Intuitively Guide Users To Adjustments, Lifetime Warranty.