Feature 1M42x0.75mm Thread: Suitable for SCT interface astronomical telescopes, T2 adapter ring is suitable for DSLR A mount camera. 2Suitable for Telescope Models: Such as for Celestron 5SE 6SE 8SE, C5, C8, C9.25, C11, C14, all SCT interface primary lens. 3Easy To Install: SCT to T2 adapter ring precise fit, secure connection, direct installation of adapter ring without adjustment. 4Widely Used: SCT to T2 adapter ring is suitable for observing and taking photos of the entire moon, gas nebula, or galaxy. 5Precise Structure: Tight and smooth combination, ensuring a stable fit. Exquisite workmanship, beautiful appearance.Item Type:TelescopeCameraAdapterMaterial: Aluminum AlloyWeight: Approx. 117g / 4.1ozSleeve Thread: External, M42 x 0.75mm (Commonly Known As T2 Thread)Adapter Ring Thread: Internal, 2 Inches - 3/8in Screw Thread (Commonly Known As SCT Thread)Compatible Model: DSLR A Mount Camera .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xTelescopeExtension Tube2 xTelescope Adapter Ring1 x Wrench