The Ilford Multigrade 8.9 x 8.9cm / 3½x3½in 12 Piece Filter Set is a high-quality product designed for use above the lens in film photography. Made by the reputable brand Ilford in the United Kingdom, this filter set is perfect for photographers looking to achieve precise and consistent results in their darkroom or developing process. With a focus on providing clear and controlled exposure, this filter set is a must-have for any serious photographer looking to enhance their craft.