Feature: 1. Compatibility: The threaded M42x0.75 adapter is suitable for 2 inch telescopes and the T2 adapter ring is suitable for PENTAX SLR K cameras, practical to use. 2. Telescope Model Applications: The adapter is suitable for telescope models such as 5SE, 6SE, 8SE, C5, C8, C9.25, C11, C14 and other SCT interface primary mirror for CELESTRON. 3. Easy to Install: Precise fit, firm connection, you can directly install the telescope adapter and the T2 ring, no adjustment, simple and convenient operation. 4. Aluminum Alloy Material: The telescope photo adapter is made of premium aluminum alloy, will not fade, do not hurt telescope thread, long service life. 5. Multiple Applications: Precise structure, tight bonding to ensure a solid fit. Suitable for observing and photographing the entire moon, gas nebulae or galaxies. Specification: Item Type: Telescope Photo Adapter Material: Aluminum alloy Weight: Approx. 117g/4.1oz Adapter Thread: outside, M42x0.75mm (commonly known as T2 thread) Connection Ring Thread: internal, 2 inch 3/8 inch thread (commonly known as SCT thread) Compatible Models: for PENTAX SLR K camera. Package List: 1 x Telescope Adapter2 x T2 Ring 1 x Wrench