Sold as two bushings, large flat washers, and a sticker.

WFB or Worlds Fastest Bushing- is a special formulation of urethane where there is a lubricant mixed in to the urethane.  Which is why these bushings will sometime look a little crusty.

The result is an even deeper turn than the APS allows.  So if you are looking for a bushing that is supportive but still allows full controlled deep turns, then throw some of that WFB into the mix.

The Tall FatCone Bushing itself has the same break from center as a barrel bushing, with a progressive resistance as you dig into a turn, and a little higher return to center than a standard barrel.  

This is a great bushing if you are trying to get as much lean and turn as possible but restrict that last bit to avoid wheel bite.

As always play with your bushings in different combinations to work out what feels great for your current level.