-Maximum tie wing strength with a superior design to easily ligate. -Highly polished surface reduces friction and enhances sliding mechanics. -Compound contoured base to fit each tooth like a glove. -A single crystal sapphire material for a crystal clear appearance. -Color coded for easy identification. -A lower, smoother profile delivers greater comfort to your patient. -The crunch grip mechanical lock base ensures optimal bond strength. **For further product information, please contact Chat Support**