The bracket has a clever two-screw spring-loaded adjustment system that allows precise and quick calibration with the main instrument - robust enough to remain in perfect collimation after the telescope is stored ready for the next observing session.
High quality 2" extension tubes with twist lock facility. These are used for achieving focus when you don't have enough focus travel. They are very well made with a centralizing twist lock locking system at the top.
This 1.25in filter consists of two joined polarized filters that provide continuously from about 2% to 40% as the rotating filter is adjusted. Great for lunar viewing without ruining your dark adaptation from staring at a bright image.
This is a 2" - 1.25" adaptor with twist lock for centering eyepieces and collimators for precise set up. Very high build quality and easy to use. The top silver ring completely unscrews to reveal T Thread turning it into a 2" - T Thread adaptor also.