CH Series Ceramic Hybrid Bearings with Grade 5 ceramic balls and ABEC 5 steel races. See pictures for details.

Angular contact bearings, when properly adjusted, have 100% ball bearing engagement all the time. Compared to the OE-supplied radial bearings, they are stronger, faster, and will last longer. Other than the plastic center sleeve, which should already be installed in your frame's BB shell, these kits include all new bottom bracket parts.

Each of the kits listed above can be used used to upgrade/replace bearings in the following bottom brackets:

Shimano Hollowtech 2 Outboard Bottom Brackets (external cups)
Race Face X-Type External Cup Bottom Brackets
Hope HT2 Outboard Bottom Brackets
RWC HT2 Outboard Bottom Brackets
Shimano Hollowtech 2 BB86 Press Fit Bottom Brackets
Shimano Hollowtech 2 BB92 Press Fit Bottom Brackets
KCNC Hollowtech 2 BB86 Press Fit Bottom Brackets
KCNC Hollowtech 2 BB92 Press Fit Bottom Brackets
KCNC BB30 X HT2 ADAPTER Bottom Brackets
KCNC PF30 X HT2 ADAPTER Bottom Brackets