【Product Contents】 - Activator Basic - Activator Advance Procedure - Author: Satoshi Ogura D.C. This is a set of the above two books. 【Condition】 The items show overall signs of use. Please be sure to check the photos for the condition, as there are stains, marks, and writing. They are usable, but please refrain from purchasing if you are concerned about the condition. We will pack carefully and ship promptly. Thank you for your consideration.