1、M42*0.75mm thread is divided into inner-ring and outer-ring double-layer structure. The camera angle can be adjusted conveniently by fixing the relative position of the inner and outer-ring with 3 screws. 2、The whole is black aluminum alloy and will not fade. Do not hurt telescope thread, two-layer thickened aluminum alloy is very strong, excellent technology. 3、Precise fit and solid connection, directly mount adapter and no adjustments required. 4、Precision all-metal construction with close and smooth combination for secure and solid fit. 5、Applicable models: for Sony/Minolta AF Mount Camera and standard 1.25 inch telescope eyepiece port. Features: 1. M42*0.75mm thread is divided into inner-ring and outer-ring double-layer structure. The camera angle can be adjusted conveniently by fixing the relative position of the inner and outer-ring with 3 screws. 2. The whole is black aluminum alloy and will not fade. Do not hurt telescope thread, two-layer thickened aluminum alloy is very strong, excellent technology. 3. Precise fit and solid connection, directly mount adapter and no adjustments required. 4. Precision all-metal construction with close and smooth combination for secure and solid fit. 5. Applicable models: for Sony/Minolta AF Mount Camera and standard 1.25 inch telescope eyepiece port. Specifications: Condition: 100% Brand New Material: Aluminium Alloy Color: Black Model: T2-AF Size: Standard 1.25inch Mount: AF Mount Thread: M42*0.75mm Suiatble for Sony/Minolta AF Mount Camera and standard 1.25 inch telescope eyepiece port Package List: 1 * AF Mount Adapter Ring 1 * 1.25inch Internal Thread Bracket Note: Although the lens is physically suitable, automatic aperture, autofocus, or any other function will not work properly with this adapter ring.