General description This 3 inch and 5 inch medium heavy duty cleaning brush set is designed for a variety of surfaces including bathroom areas, bathtubs, showers, tiles, and grout. These brushes are perfect for cleaning boat hulls, tires, linoleum, carpet, upholstery, floor cushions, glass, and more. The medium stiffness bristles provide strong cleaning power, making it easier to tackle tough stains. Technical specifications Brush sizes: 3 inch and 5 inch Bristle material: Durable polypropylene Brush stiffness: Medium Quick change shaft: 1/4" stainless steel Usage Ideal for use with a variable speed drill for maximum cleaning control. Designed to significantly reduce cleaning time compared to manual scrubbing. Effective for removing stains from leather, fabric, and carpet. Other information Cordless drill not included.