This new ZWO-EOS-T2-Ⅱ adapter has two parts (EOS-T2 adapter and 5mm length T2-extender), suitable for all ASI cameras.
This new type is unadjustable.
EOS-T2-II supports Canon EF lens only.
EOS-T2-II adapter without T2-extender is suitable for 17.5mm backfocus distance ASI cameras such like Cooled cameras and ASI174, ASI294, ASI183, ASI1600, ASI533, ASI2600 except ASI6200
EOS-T2-II adapter with the 5mm T2-extender, suitable for all 12.5mm backfocus ASI cameras such like ASI120, ASI224, ASI290, ASI178, ASI385.