If one of our in-stock wobblers or Xcel wobblers doesn't seem to fit your design, we carry replacement nozzles in a variety of flow rates. These are color coded for easy identification. Stream heights vary between 2.5 - 5.5 feet above nozzle. Manufacturer recommends wobbler installation at least 1.5 feet high.Please Note: Manufacturer no longer recommends the #18 Purple nozzle in the Wobbler or Xcel Wobbler. Use at your discretion. The high flow of this nozzle should be carefully considered before use in your wobbler or Xcel wobbler system. We suggest checking out the Senninger Wobbler Design Guide and resources to assist in planning your system. Senninger's WinSIPP3 software is a great place to start. You can download right from Senninger's website. Click the link to view resources. Wobbler/Xcel Wobbler Nozzle Replacement Changing the nozzle in your Xcel Wobbler requires a 5/8" "box" or "closed" wrench. Unfortunately, the open end wrench will not fit in the wobbler. 1. Place the closed end of the 5/8" wrench over the nozzle carrier and turn counter-clockwise to loosen. 2. Remove the nozzle carrier from the sprinkler. 3. Push down on the nozzle to remove from the nozzle carrier. Insert the new nozzle from the bottom of the carrier and push up until it clicks into place. 4. Place sprinkler back into wobbler top and insert the nozzle carrier over the sprinkler and thread back in. Be careful not to cross thread. 5. Use closed end of 5/8" wrench to tighten (turning clockwise) nozzle carrier into sprinkler.