None of it is useful for a street fight. You want to win a street fight? Google free pipebomb recipes. Go to your kitchen or bathroom sink for supplies. Spend maybe 40 dollars at Lowest or Wal-Mart for other ingredients. Follow your enemy. Stalk them. Find out their daily routine to work, to school, to the groceries. Plant side pipebomb on the side of the road or at an intersection you know they'll drive through. Catch them off guard just like they were trying to catch you off guard.
There are no rules no laws in a street fight. A street fight is a war against your personal well being. The first person to do the most horrible thing wins. They punch you, you stab them, they stab you, you shoot them, they shoot you, You blow them up with a well placed pipebomb.
There's a reason why soldiers who are better trained and better equipped then any street fighter or martial artist fears improvised explosive devices like a pipebomb. Nothing instills more fear, harms more people then a pipebomb. Doesn't matter how many people you're up against, doesn't matter what they train for, doesn't matter how many moves they know, doesn't matter how big or expensive that gun or knife was.
Nothing beats a well placed pipebomb