Brand x headset 34eess sealedthe brand x 34eess headset has an external 34mm upper cup and an external 34mm lower cup for use with a 1 18 straight steerer it uses sealed angular contact bearings and has been designed to offer superior reliability quality and performance at an exceptional price point featuresangular contact sealed bearingsheight 29 1mmmaterial cnc forged and machined 6061 alloyshis norm ec34286 ec3430includes top cap and star nut buy brand x components from ch