M48x0.75 female thread: for 2 inch adapter to M42x0.75 male thread adapter
With it you can convert a male M48 thread to a male T2 thread with minimum possible mechanical length
M48/M42; All metal construction and anodizing aluminium process; resistant for long time use
The required spacing can be achieved by combining several extenders of differing lengths; you can use 1 piece; 2 pieces; 3 pieces or 4 pieces of the extension rings as you like
The extension tube has a M48x0.75 interior thread and a M48x0.75 exterior thread for elegantly solving spacing problems in astrophotography