Compatible Cameras: Fits a wide range of Canon EOS SLR/DSLR cameras; including 5D; 5D Mark II; 50D; 60D; 20D; 30D; 40D; 350D; 400D; 450D; 500D; 550D; 600D; 1100D; 1D; 1D Mark III; Digital Rebel T4i; T3i; T2i; T1i; Xt; Xti; Xsi and Xs models
Telescope Adapter: One end of the T2 T Ring is M42 female threaded and the other is Canon EF-Mount; you can attach your camera freely to a 1.25 inch or 2 inch focuser of telescope by using a appropriate T-Adapter which is not include
Durable Construction: Made of high-precision metal with an anodized aluminum surface to ensure durability; the inner wall is designed with matte threads to reduce the effects of light scattering during observation
Improve Focusing Problem: The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread; elegantly solves the spacing problems in astrophotography and improve a series of focusing problems
Variable Combination: The required spacing can be achieved by combining several extenders of differing lengths; Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners