This single item can be used for both acupressure on the back and massage with the roller. A pin can be inserted into the roller to stop its rotation. With the pin in place, it can be used for acupressure on the back. Removing the pin turns it into a massage roller that can be used on the whole body. The shape of the roller provides a pleasant stimulation. In addition, there is a ball on the bottom for acupressure, making this a three-in-one product. Size: 360 x 133 x 75 This item is no longer sold and is difficult to obtain. Please refrain from purchasing if you are overly concerned about the condition, as it is a used item. No claims or returns accepted.