Description: 【Versatile Compatibility】: Designed specifically for telescopes, this adapter seamlessly connects to models like 8SEC8, C925, and (), allowing you to attach 2 inch astronomical accessories with ease 【Material】: Crafted from metal, aluminum alloy, and copper rings materials, ensuring durability and longevity for all your stargazing needs 【Dimensions】: With a base diameter of 5.6cm/2.20inch, a height of 5.4cm/2.13inch, and an upper outer diameter of 7.7cm/3.03inch, this Telescope Adapter Mount is engineered for fit and secure connection 【Locking Mechanism】:The Astronomical accessories features a coaxial locking interface that provides stability and prevents any unwanted movement during observation sessions 【Package】: Comes with a adapter sleeve included in the package to ensure you have everything needed for immediate setup and use with your telescope equipment Size Chart: base diameter : 5.6cm/2.20inch height : 5.4cm/2.13inch upper outer diameter : 7.7cm/3.03inch Package Includes: 1 coaxial locking sleeve Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.