1" threaded Dura-Ace 7410 headset (English thread). Stack height is about 40mm iirc. The sealed cartridge bearings are still smooth but cosmetically it is challenged, the lower cup decals are faded as are the top. The top also has some small scraping marks. The lock bolt is from a 600 headset and is non original and finally the alloy crown race has started to crack. These are £75+ new. £20 Posted.
