High-Quality Material: Crafted from stainless steel, these gaskets excellent resistance against and wear, making them perfect for long-term use in both amateur and professional astronomical setups. Versatile Compatibility: Designed to fit M42,flange types, this gasket set is a versatile choice for enhancing the connection stability between camera adapters and telescopes, ensuring a secure and precise fit for optimal performance. Enhanced Photography Experience: By providing a tight and secure seal, these gaskets minimize any potential light leaks, ensuring clearer and more detailed photographs of celestial bodies, making them indispensable for astrophotography enthusiasts. Essential Telescope Accessory: These gaskets are not just spare parts; they are crucial for maintaining the integrity of your telescope's assembly, protecting sensitive optical equipment from dust, moisture, and other environmental factors. Easy Installation: Each gasket in this set is designed for quick and hassle-free installation, allowing both seasoned astronomers and hobbyists to easily upgrade their telescope setup without the need for professional help. Color: As shown Material: Stainless Steel Package Contents: 11*M42 Rear Gasket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.