Rip Tides WFB bushings are crafted using their "World Fastest Bushings" material. The WFB is designed with a unique lubrication, which is why the surface of the bushings often bears a white residue.
If you're seeking exceptionally smooth responsiveness from your bushings and wish to master them rather than having them master you, these are certainly worth a try.
They come in a broad variety of durometers to suit your weight, skill level, or merely to complement the colours of your setup.