Rain Bird TP25 Drip Irrigation Tubing "Goof" Plug, 10-Pack. Also known as a “goof plug”, seals unwanted holes in all brands of 1/2" or larger Drip irrigation tubing. Also use to terminate runs of 1/4” Drip tubing. Easy to insert by hand or use Rain Bird ET/1PK25S Tool (sold separately) for a quick, easy installation. Constructed of highly durable UV and chemical-resistant materials to assure long life. Rain Bird “The Intelligent Use of Water”