1、Made of Prime Material: The set use premium aluminum alloy material, durable, will not fade, does not hurt the telescope threads. 2、Easy to Install: Precise fit, solid connection, direct mount adapter ring, no adjustment required. 3、Wide Range of Applications: Suitable for observational photography of entire moons, gas nebulae or galaxies. 4、M42x0.75mm Thread: Suitable for SCT interface astronomical telescope, T2 adapter ring for EF mount SLR camera. 5、Suitable for Telescope Models: Such as for 5SE 6SE 8SE C5 C8 C9.25 C11 C14 etc. All SCT interface primary lenses. 1 x Telescope Camera Adapter2 x Adaptor Ring Item Type: Telescope AdapterMaterial: Aluminum AlloyWeight: 126g / 4.44ozSleeve Thread: Male, M42x 0.75mm (commonly known as: T2 thread)Collar Thread: Female, 2inch 3/8 thread (commonly known as: SCT thread)Compatible Camera Type : For EF mount SLR camera