1The telescope can be used as camera lens through the 2 inch extension tube and adapter ring set to see astronomical scenes such as star or nebulae. 2The effective working length of the extension tube is 60mm/2.4in, which can magnify the screen to facilitate observation of more details. 3Made of highquality aluminum alloy, it is strong and durable, and the cover is painted to prevent oxidation and corrosion. 4The inner wall is treated with extinction to avoid the influence of reflected light on imaging, provide better performance. 5Suitable for Sony/Minolta AF mouth camera, help you keep the beautiful and interesting view of your telescope or microscope. Item Type: Telescope to Camera Adapter Kit Material: Aluminum Alloy Color: Black Extension Tube Effective Working Length: Approx. 60mm/2.4in Weight: Approx. 250.0g/8.8oz Suitable for Sony/Minolta AF mouth camera 1 x TelescopeExtensionTube 1 x 2in to T Adapter(Installed) 1 xCamera AdapterRing