Kettle Brush-Threaded For Handle Block OnlyBrewers Cleaning BrushesMade of FDA Approved Materials Handles and Bristles are tough and durableTank & Kettle Brush (no handle)5 1 2" x 7 1 2" with Threaded blo ck for use with handle Flare head design assured an effecient and all around t horough cleaning and is comfortable to use Nylon bristles provide excellent chemical re sistance Plastic handles are lightweightbreak resistant and soak proof