This Finger Splint comes with a built in aluminum support bar that serves as the finger straightener and immobilizer. It is very effective for: Mallet Finger, Trigger finger, Broken, torn, jammed, fractured finger or phalanx, finger sprain, dislocation and fracture, finger knuckles or joints and ligament tears, metacarpal sprain and dislocation, carpal tunnel, hammer-like, tendon sheath hands ,tendonitis, post-surgery healing and medical rehab.