Engineered to provide positive grip and ease of installation. High quality and reliability have made insert fittings the preferred choice for irrigation and O.E.M. applications. These plastic insert barb fittings are designed to fit black polyethylene irrigation tubing, or potable water tubing for wells. Our line of insert fittings include insert elbows, insert tees, insert crosses, insert couplings, insert adapters, and insert plugs.