Each volume has the full text of Aristotle with Bekker numbers, followed by the commentary of St Thomas, plus cross-references using an easily accessible mode of refering to Aristotle in the Commentary. Originally published and distributed by Dumb Ox Books in the USA only.
Metaphysics: books [gamma], [delta], and [epsilon] by 
The Metaphysics: Books [zeta] and [eta] by 
Commentary on Aristotle's Metaphysics by 