Answer:
Each of these ends in a kettle full of precious metal and the double variety is quite awesome
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
I bind it and it walks. I loose it and it stops.
What binds two people yet touches only one?
What goes around and around the wood, but never goes into the wood?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.