Genuine Joe - GJO18410 Use this Window, Vehicle & Wall Brush for scratchless cleaning and excellent wearability. It is made with heavy-duty, gray-flagged polystyrene. Soft filaments set in foam blocks with vinyl bumpers helps protect equipment, painted vehicle surfaces and delicate trim. Brush uses standard threaded handle - tapered or flow-through for wet use. Trim length is 2-3/8".