Answer:
I help engines spin and pants stay up
If you break me, I'll not stop working. If you can touch me, my work is done. What am I?
What starts with the letter βtβ, is filled with βtβ and ends in βtβ?
A thousand wheels, but move I do not. Call me what I am, call me a lot. What am I?
I run up and down the stairs without moving. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?