I've used this a few times after purchasing it, but I'm selling it because I no longer have the opportunity to use it. The box is also included. The light green one has been repaired with a full circle of Aron Alpha glue. There are no issues with its use. The NABOSO Hand Activation Kit includes three balls perfect for grip strengthening and myofascial massage, awakening the sense of touch in your hands. - Brand: NABOSO - Product Name: Hand Activation Kit - Number of Balls: 3 - Uses: Grip strengthening, myofascial massage, improving finger dexterity - Benefits: Awakens hand sensation, improves grip strength, releases muscle tension, improves finger dexterity, enhances mental focus, hand rehabilitation Thank you for looking.