ZTTO 3434S Bicycle Headset
ZTTO code: Upper cup/Bearing outside diameter+ Lower cup/Bearing outside diameter + Fork tube
("34" for OD ø34,"S"for Straight Tube fork)
ZTTO code is for quick search,not a accurate specifications.Please refer to SHIS(Standard Headset Information System)
EC34/28.6
EC34/30
MATERIAL: CNC MACHINED AL6061 T6
SEALED BEARING
WEIGHT: About 106g