T-Bars are attachment handles that can be used on the end of your extension poles or used by hand. However, be sure to note that not every brand of T-Bar is compatible with every brand of extension pole. Usually made of plastic or aluminum, T-Bars are used for holding your washer sleeves. Depending on your choice, some T-Bars do swivel which makes cleaning those hard to reach places a breeze. Their sizes range from 6 inch to 36 inch and come in different colors and styles depending on the brand. Window Cleaning Resource offers a variety of T-Bars in top brands such as Maykker, Ettore, Moerman, Pulex, Sorbo, and Unger.