This is a 2" manual filter wheel that holds 5 standard 2" filters.
Whether for astrophotography or visual observing
Use the filter wheel with UHC, OII, CLS and other filters
The telescope side of the filter wheel comes supplied with a 2" adapter, allowing you to quickly and easily attach it to your focuser. The filter wheel also has a T-2 thread on the telescope side for other adapters.