In my opinion this is the best print of Fath al-Baari bi-Sharh Saheeh al-Bukhari. Printed in 17 Volumes with two additional volumes that contain Hadi as-Saari is an explanation of Sahih al-Bukhari, composed by Ibn al-Imaam Ibn Hajar al-'Asqalani. It is the most celebrated hadith explanation. It is reported that it took Ibn Hajar 25 years to finish this work.