Jennings ratchet style mouth gag with strap. This high quality medical device is used by dentists and doctors to keep the mouths of their patients open during procedures. The hinge has a ratcheting feature that securely holds the gag open once you set it into place. Just press the lever to easily close the gag. A twist on our classic Jennings Gag, our newest version has a black rubber coating, for comfort as well as to keep the gag from slipping. We have added a secure neck strap, to help keep it in place.