1.Enhance Lunar and Planetary Vision: The Moon filter and five color filters (red, green, yellow, orange, blue, purple) highlight the features of the moon, Mars, Jupiter, and Saturn, enhancing your astronomical observations.2.High-Quality Construction: Made with a 2' high-quality aluminum alloy frame and optical glass, these filters are durable and suitable for long-term use. The surface anti-oxidation treatment ensures optimal performance.3.Easy Storage: Each filter comes with an individual clear plastic storage box, providing dust and drop resistance, keeping your filters and organized.4.Wide Compatibility: Designed with a standard filter thread (M42 x 0.75), these filters are compatible with various telescopes. They are easy to install and remove.