NIB/NOS YST Professional Threaded Headset: 1" - JIS 27.0mm - Loved Nuts - Silver - Alloy
Affordable headset for your vintage road or mountain bike. This one has lobed wrench flats, that looks like it'll fit the Dura Ace AX / 600 EX headset tool (have not tried this).
New in box.
- 1 inch threaded
- Crown race: 27mm
- Silver alloy