Orbit Metal T-Post Sprinkler with Zinc ImpactZinc Impact Sprinkler on Fence T Post Base with Flow Through is ideal for watering large areas. Designed to fit on the top of most metal T posts a sprinkler mounted on a post gives you peace of mind knowing the sprinkler will not tip over or accidently be dragged out of place. Excellent choice for multiple watering applications, including lawns, gardens, pastures, and more. The thumb screws secure the base to the post, while allowing easy removal.