This is the new Hope Ceramic Bearing Hollowtech Road Bottom Bracket. Hope have brought their famous bottom brackets into the world of road bikes. Hope’s machined aluminium cups hold ceramic bearings in stainless races for reliable and long lasting rolling. The bearings, made by INA, are designed to run directly on the crankset axle, without the use of shims or spacers, further increasing life and reliability. These replaceable, Swiss made bearings feature double sealing, giving much greater life span than other units. Hope now use a non contact, free running labyrinth seal on the bearing. Protecting bearings externally and the machined aluminium centre tube is sealed internally with o-rings.