Item Type: Lens Adapter_x000D_ Weight: 184g/6.5oz_x000D_ Material: Aluminum alloy_x000D_ Sleeve Thread: outside, M42 x 0.75mm (commonly known as T2 thread)_x000D_ Connection Thread: internal, 2in 3/8 thread (commonly known as SCT thread)_x000D_ Compatible Models: for mirrorless camera R mount camera 1M42 x 0.75mm Thread: Suitable for SCT connected astronomical telescopes, T2 adapter ring for Mirrorless Camera R mount cameras. 2Suitable for Telescope Models: such as for 5SE 6SE 8SE C5 C8 C9.25 C11 C14 and other SCT interface main lens, you can choose according to your model. 3Easy to Install: It is precise fit, firm connection, directly installed adapter ring, no adjustment, for your use to provide a lot of convenience. 4High Grade Materials: Aluminum alloy material, durable, will not fade, do not damage the telescope thread, can be nice protection of your telescope. 5Accuracy Structure: Tight and smooth bonding to ensure a solid fit. Suitable for observing and photographing the entire moon, gas nebulae or galaxies. 1 x Sleeve 2 xAdapterRing 1 x Wrench