Answer:
I help engines spin and pants stay up
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?
In buckles or lace, I help set the pace. The farther you go, the thinner I grow. What am I?
Sometimes dark and sometimes bright, I make my way among twinkling lights. Seas and oceans obey my call, yet mountains I cannot move at all. What am I?
I hold two people together but touch only one.
I am your mother's brother's only brother in law. Who am I?