Compatible with HASSELBLAD. The 60mm lens diameter can be converted to a 77mm filter diameter, and is compatible with more filter types, such as polarizers, ND filters, etc. Made of wear-resistant aluminum alloy, it is lightweight and durable, resistant to corrosion and oxidation, and protects the lens from damage. The thread design is precise and can be used immediately without additional tools, so the filter can be replaced quickly. The compact design makes it easy to carry around without adding extra weight, making it suitable for professional photography and outdoor shooting.