Check the listing for details. 10 pack DURA Barbed Elbow 3/4". Condition: New, Made in United States. Listed at 32.95 USD. The Dura Barbed Elbow (Insert x Insert) is the standard solution for creating secure 90-degree corners in your poly piping system. Manufactured from high-impact grey PVC, this fitting allows you to make sharp turns in your polyethylene tubing without kinking or restricting water flow. To ensure your system operates safely within the pressure limits of these connections, we highly recommend installing a pressure regulator upstream. Known for their durability and "bite," Dura insert fittings feature sharp, multi-barb ridges that grip the inside of the tubing wall. While these are some of the most reliable irrigation fittings on the market for agricultural and commercial applications, they must be secured with hose clamps to ensure a permanent, leak-proof connection under pressure.