Features: Easily Attached Telescope Camera AdapterThe extension telescope camera adapter easily connects camera body to your telescope with T Rings. Put your telescope eyepiece inside the adapter's extension tube to magnifies for more details and clear, suited for photography with DSLR cameras or eyepiece projection astrophotography (Note: the adapter doesn't fit mirrorless cameras); Variable Extension TubeThe variable extension tube features a telescopic design to increase the magnification (so as to change images size). Compatible for 1.25" eyepiece of both reflectors telescope and refractors telescope Different Way to UseThere are two way to mount the extension tube. One is to place your telescope eyepiece into the eyepiece holder of tube, to achieve a long focal length and film small object. The other is to mount tube directly on cameras without eyepiece and connects it to your telescope. By using the telescope focal length, it is capable of filming the entire moon; Quality Material and Durable BuildThe anodized aluminum build is durable and will with stand daily wear over a long period of use; Specifications: Material: Aluminum Color: Black Interfaces size: 1.25inches (approx.31.7mm) Thread specification: T2thread (M42x 0.75mm) Thread: The entire set comes with thread inside Anti slip design: Yes, T-head with anti slip grooves Eyepiece hole diameter:Approx.38mm Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xTelescope Camera Adapter