The ZWO EAF Celestron C8 & C9.25 Mounting Adapter allows you to adapt the ZWO EAF motorized focus finder to the focus finders of Celestron 8"/9.25" SC and RASA 8" telescopes.
For C11, C14 you need a different mount adapter, this type is only compatible with the types listed in the name. It is also not compatible with models with Feather Touch focus attachments!