We appreciate your review. In the product description, it is mentioned that the rack has an 'Increased Capacity: The rack can accommodate up to 182 oils, including 55 bottles of 5ml, 55 roller bottles of 10ml, and 72 bottles of 15ml.' The 10 ml rollers can include any of the doTERRA touch line 10ml rollers, and they will fit perfectly, as well as any other 10 ml roller bottles. If you have any more questions, please feel free to reach out to us at support@oillife.com. We're here to address your inquiries and provide assistance with pleasure.