Answer:
In buckles or lace, they help set the pace. The farther you go, the thinner they grow.
Break it and it is better, immediately set and harder to break again
I look at you, you look at me, I raise my right, you raise your left.
Dies half its life. Lives the rest. Dances without music. Breathes without breath.
What flies forever, Rests never?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?