Fully sealed mechanism helps to prevent contaminates from entering the headset for a longer service life
Tange-Seiki original sized 4T5 Upper and Lower cartridge bearings
For use with 34mm straight head tube and 1-1/8" straight threaded steer tube type fork
23mm Upper stack / 11.5mm Lower stack / 34.5mm total stack
#1508 Upper and Lower bearings