Answer:
My teeth are sharp, my back is straight, to cut things up it is my fate.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
I work when I play and play when I work.
Snake coiled round and round. Snake deep below the ground. Snake that's never had a head. Snake that binds but not with dread.
What surrounds the world, yet dwells within a thimble?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?