TANGESEIKI BMX Headset MX320
Loose-proof mechanism
Sealed cartridge bearing
The top lock nut, adjusting cone, and upper & lower cup are made of A6061T6 light-alloy
Bigger lower cartridge bearing for more durability with the sealed mechanism
32.7mm cup size to fit old 1" BMX frames, does not fit 1" road and mountain bike frames.
26.4mm bearing race
Weight：109g
Made in Japan