Dont be fooled by the title Enduro have been producing bearings since before the word Enduro became fashionable there bearings are an industry leading design and they set the standard for all other bearing manufacturers to match.nbspYou may be more familiar with the ABEC standards ...Dont be fooled by the title Enduro have been producing bearings since before the word Enduro became fashionable there bearings are an industry leading design and they set the standard for all other bearing manufacturers to match.nbspYou may be more familiar with the ABEC standards from the worlds of skateboarding and roller blades but Enduronbsp have tailored their bearings for the specific demands of cycling. The entry level industry standard of a bearing is ABEC 1 but Enduro do not produce any bearing which comes in at less than ABEC 3 this means that even if you choose an entry level Enduro bearing it is of better quality than another manufacturersnbspentry level bearing.Enduro were the first company to produce a truly sealed full ceramic bearing and this selection for your bike will make it run like a dream.