Enduro ceramic hybrid caged deep groove ball bearings and plastic sleeves ("Top Hats") to fit Monocrome External Bottom Brackets.

Ceramic hybrid bearings have a conventional steel outer race but with ceramic balls inside. The harder ceramic balls roll a little easier, weigh a little less and the bearings have been designed to minimise rolling friction.

These bearings are not recommended for mountainbiking applications as they are virutally unsealed and only suitable for dry conditions.