An optional part of the modular Astro T-2 system, the Alpine Astronomical Baader T-2 Quick Changer lives up to its name by allowing you to set up and switch equipment without have to screw in or unscrew components. This saves time and avoids possibly cross-threading and ruining your gear. One side has standard T-2 female threads to be compatible with T-2 system components like camera adapters and extension tubes and a Zeiss bayonet for compatible cameras, and a locking ring on the other side that holds your gear firmly and safely in place.