Wheel Master Weinmann LP18 Rear Wheel - 700c, 36H, Fixie/Freewheel, Black/Black/Silver

You can put two cogs at same time, one on each side?

Does this come with the rear freewheel and sproket on? So can I judt slide it on my bike, slide the chain on, and get to riding?

is the fixed gear cog already on or do i need to put it?

Is possible to use with two freewheel in each for a dual chain bike???