Brush has a slim 1/2" profile and a long handle for cleaning tight areas such as radiators, refrigerated cooling coils, and behind desks Block and handle are made of plastic for durability and offer slip resistance Black blended bristles are made of horsehair and polypropylene for durability and provide a soft, low-abrasive clean Flagged design of the bristles catches fine dust and debris Bristle area is 9 inches long, and the overall dimensions are 24 x 1/2 inches (L x W)