Acros ah 34 ec34 30 lower headsetperfect for updating your existing lower headset interface, this lower headset features a robust aluminium construction. This makes it more than capable of handling all the intensity that's associated with road racing and clocking up the miles on longer journeys. Allowing your fork's steerer to rotate inside the frame's headtube, this lower headset is kitted out with stainless steel bearings. This gives it an extra layer of durability, while its r3 seal allows it to perform in all weather conditions. Featuresheadset material aluminiumbearing material stainless steelseal material r3 metal reinforced rubberuse road, mtbsteerer diameter 1 1 8headset type conventionalpart number 1602601r4sweight 53g approxbuy supacaz components from chain reaction cycles, the world's largest online bike store.