Answer:
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
I am always in front of you, but you will never see me. What am I?
My first is high, My second damp, My whole a tie, A writer's cramp
I have split the one into five. I am the circle that few will spy. I am the path that breaks and gives. I am the bow no man may bend.
What is the thing which, once poured out, cannot be gathered again?
What did the piece of wood say when he saw the screwdriver and screws approaching?