Tiger Tail Knotty Tiger Knot Buster Massage Ball Tool Delivers Elbow Deep Pressure Relieving Hands Fingers Thumbs from FatiguePerfectly adaptable! Three trigger point curves allow you to apply differing amounts of pressure depending on your end goal Saves fingers! This inventive muscle massager saves hands and fingers by allowing the user to lock the wrist and deliver pressure from the biceps and triceps, resulting in a deep, stable and controlled pressure on muscle knots Easy to maintain and clean! Hard, firm and smooth surface glides over clothing Easily cleaned with soap