Rain Bird TP25/10PS Drip Irrigation Tubing "Goof" Plug, 10-Pack. Black plastic plug also known as a "goof plug" seals unwanted holes in all brands of 1/2 in. or larger Drip irrigation tubing. Also use to terminate runs of 1/4 in. Drip tubing; fits all brands of 1/4 in. tubing. Easy to insert by hand or use Rain Bird ET/1PK25S Tool (sold separately) for a quick, easy installation or larger projects. Simply insert tubing plug in large hole located in end of tool and push into unwanted hole for a secure leak-proof seal. Plug features small ridges designed to hold it firmly in tool; they flatten slightly when plug is inserted allowing for easy deployment into tubing and removal of tool. Constructed of highly durable UV and chemical-resistant materials to assure long life. 10-pack of plugs in convenient plastic bag. Rain Bird "The Intelligent Use of Water".