Answer:
I crawl on the earth. And rise on a pillar.
Metal or bone I may be, many teeth I have and always bared. Yet my bite harms no one. And ladies delight in my touch.
Weight in my belly, Trees on my back, I travel fast in my place, but feet is a feature I lack
It's anything but amusing when this body part gets hit.
A skin have I, more eyes than one. I can be very nice when I am done.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?