Answer:
Goes over all the hills and hollows, Bites hard, but never swallows.
I help engines spin and pants stay up. What am I?
I have hands but do not hold, teeth but do not bite. Feet I have but they are cold, eyes I have but without sight. What am I?
The more you look at me The less you see.
Glittering points that downward thrust. Sparkling spears that never rust. What am I?
I have a face but no eyes hands but no arms.