Perfect compatible with Sony Nex Cameras;Note: it doesn`t fit EOS-M models;connect camera to telescope compatible with direct;prime focus; photography convenient and easilySuper easy to use;thread t adapter into t ring adapter;then thread the whole mount adapter into cameras to connect to telescopeUniversal t adapter fits all standard 1.25inch diameter telescope microscope etc;t ring adapter is compatible with all standard 1.25inch lenses of cameras;Manual focusing;some short-focus camera or telescope`s optical tube may not be able to focus quickly;so it`s best compatible with you use an additional extension tubeHigh quality metal materials and tight;non binding fit;solid and durable compatible with long term useThread specification: M42x0.75mm (T2 thread)Bayonet Type: NEX Sony Mini Single E bayonetFlange distance: 10mmsize:about 59.7x59.7x15mm Material:Metalcolour:BlackPackage Contents:1 x Adapter RingOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.