Mr. Gasket 5189 Engine Cleaning Brush Kit Includes six assorted brushes to get at hard to reach grime anywhere on your engine or transmission Ranges in diameter from five sixteenths to five eighths and in length from 9 inches to 25 inches Made from stiff bristle nylon that won't soften or melt when subjected to harsh petrochemicals Heavy gauge twisted steel wire handles bend enough to get around corners and through stubborn galleys without breaking Handles end in a loop for easy hanging and storage