they keep your chain tight
inox or chain lube from a bike shop
No, you can just cut your chain with a chain breaker or just take it to a shop and they will do it for you.
they can range from 46teeth on a chain wheel all the way down yo a 22tooth chain wheel.
It depends on the length of the chainstays on your frame.
A chain is a chain, it hasn't got any gears in it. But if you run it across a pair of sprockets you can create a gearing ratio.
A crank (or a crankset) is the thing that sits in the middle of the bicycle, has the chain on it and have the pedals attached to it.
BMX pegs can be bought online from Chain Reaction Cycles. The pegs are in a range of sizes and colours such as blank value pegs and P3 pegs. BMX pegs are for those who want to do extreme cycling or stunts on a bike.
No. Some BMX chainrings have the same 4/5 bolt pattern as road bikes, but most use another method of attachment to the crank. If it is a 4/5 bolt chainring you first have to measure the bolt circle diameter to see how that fits. I'll post a link on that. Next is the thickness of the chain rings. BMXes are single-speed and use a thicker chain. Most road bikes have external gears and need a thinner, more flexible chain to work. I'm not sure if a road bike chain will fit on a BMX chainring. (Unless it's a single-speed road bike of course. Then you can run a BMX-style chain and all can be made to work.)
Adjusters International was created in 1985.
It is not recommended, your feet can slip off the pedals and you can get hurt.
There is no patron saint of insurance adjusters.
It must be fairly tight to stay on properly and not to slap around too much.