Time saving cleaning tool. Add muscle to your scrubbing by attach this brush to your powered drill. Super heavy duty plastic base plate won't crack after many uses. Durable stiff bristles can break down heavy grease, stains, mold from bathroom/shower tile. Cleans outdoor concrete, brick, and stone effortlessly. We don't suggest using this Red stiff brush on carpet and upholstery fabric. Golden State offers different grade of bristle brushes for different uses.