2-inch Filter Holder: This 2-inch filter holder is designed for ZWO M42 (2nd generation) and M54 (2nd generation) systems, offering a safe and convenient solution. It provides a stable and precise mounting solution for your 2-inch astrophotography filters, helping you achieve high-quality, repeatable imaging results. For EOS and Nikon Filter Drawers: This holder is specifically designed for ZWO EOS and Nikon filter drawers, allowing for quick filter changes without adjusting imaging settings. It is ideal for astrophotographers who frequently need to change filters under various shooting conditions. High-Quality Metal Construction: The filter holder is made of machine-grade high-quality aluminum alloy, offering excellent rigidity and long-term reliability. The robust construction helps maintain accurate optical alignment and protects your filters from accidental drops or damage during installation. Stable and Reliable Filter Mount: This filter holder is designed to securely hold 2-inch filters, reducing the risk of filter tilting, light leaks, or movement during long exposures. This stable mounting is crucial for obtaining sharp stars, accurate colors, and clean image edges in deep-sky imaging. Ideal for deep-sky and planetary imaging: This filter holder accommodates wideband, narrowband, and special-purpose 2-inch filters, supporting a variety of astrophotography applications, including imaging nebulae, galaxies, and planets. It's a practical accessory for both beginners and advanced users looking to build flexible filter systems. Color: Black Material: Aluminum Alloy Package Contents: 1 * camera filter holder