Spin Scrubber Replacement Heads: The set includes three replacement heads specifically designed for the Spin Scrubber cleaning tool. Flat head: The flat head is ideal for large, flat surfaces like floors or walls, providing efficient and thorough cleaning. Dome head: The dome head is designed for curved or contoured surfaces, such as bathtubs or sinks, allowing for effective cleaning in hard-to-reach areas. Corner head: The corner head is specifically shaped to clean tight corners, edges, and grout lines, ensuring a deep and thorough clean. Set of 3: The set includes three replacement heads: flat, dome, and corner heads, offering versatility for different cleaning needs.