Ring Inside the Barrel: The fixed eyepiece interface is equipped with a soft brass metal ring that prevents eyepieces from scratching. Anti Reflective Interior: The inner wall of the adapter is coated with matte paint, which effectively absorbs and eliminates stray lights emission without affecting the imaging of the original main mirror. Premium and Reliable: The astronomy telescope adapter is made from durable metal material, ensuring long time performance and reliability in various weather conditions. Product Dimensions: Height 5cm/1.97inch, top inner diameter 5.1cm/2.01inch, bottom inner diameter 5cm/1.97inch , this compact adapter is easy to install and use without adding significant weight or bulk to your telescope setup. Package Includes: Comes with 1SCT to 2inch telescope adapter interface, providing you with everything you need for a quick and easy installation. Specification: Material: Metal Color: Black Package Includes: 1Astronomy Telescope Adapter Note: Please allow slightly errors due to manual measurement and different monitors.