Hardly any other component is more hidden but nevertheless important than the Headset. More than 15 years of know-how in bearing technology are directly reflected in our products.The result are High-end Headsets with the right spark of glamour and elegance.External Cup offers, because of its type of construction the biggest creative scope.Features:Stainless - Industry - Angular contact ball bearings, double sealedCNC - made in Germany / Al2000 seriesR3 seal (metal sheet supported rubber seal)Technical Specifications:AH-34 Top EC34/28.6Fork steerer: 28,6mm/ 1 1/8"Cup skirt Ø: 34mmCup skirt length: 9,6mmTotal stack high: 16,3mmWeight: 48g