Passive Self-ligating Agility Passive Self-ligating Agility (5 units) 15 €41.25 Pack of 5 units. Agility is the latest innovation in self-ligating and derives from the Comfort Zone bracket system, with a very low profile, up to 20% lower than the rest of self-ligilables on the market. It is very easy to use without the need for a special instrument. View