Nova is our lowest profile self-ligating bracket system. The ultra-smooth surface and rounded corners provide exceptional patient comfort. The door is designed with a 90° clip slot that provides a secure locking mechanism and is easy to open. Simply place the Nova SL tool into the slot, and twist. Nova brackets come with ball hooks in the cuspids and bicuspids, but also have ball hook slots built into every bracket for easy elastic placement and sliding mechanics! Colored ID marks and laser marked bases provide easy bracket identification.