[Buying]  Metal Fusion and Metal Fury Performance Tips


We started playing Beyblades and really enjoy them. We purchased a few from amazon (metal fury and metal fusion) and a stadium to go with it.  I looked at the section on where to buy Beyblades, so I called a couple of stores.

I'm not sure if what I want to buy exist, but I'm looking for performance tips, or drivers? Not really sure what they are called but they are the bottom piece of the Beyblade. If anyone can point me in the right direction that would be very helpful.

I'm not sure what performance tip i'm looking for. Really wanted to try out a few if that makes any sense.