J&L One Inch/25.4MM Threadless External Headset Ceramic Bearing-1"/30.0MM/30.2MM

Description

After
you receive the item, if you are not satisfied with my item or service,
please contact me before you leave feedback, I will try my best to fix
it for you
Return& Item Quality control:
1 year warranty
Detailed information of the product:
Headset Cup size： 30.0MM(JIS) or 30.2MM(ISO)
Crown Race Inside Diameter: 27mm for Both Type
Made of
6061
-T6 Aluminum
Alloy,
CNC Machined and Polished&Anodized surface
Threadless& External
Frame headtube internal diameter Need to be: 30.0MM or 30.2MM
2 Sealed Cartridge Bearings
Weight: 94g
Stack Height : 27MM
Regular Bearing
：
Race Material: P6 bearing steel
Enclosure: Two Seals
Enclosure Material: Rubber Seal
OR
Hybrid Ceramic Bearing
:
Race Material: P6 bearing steel
Ball Material:
Nitrided Silicon Ceramic SI3N4
Enclosure: Two Seals
Enclosure Material: Rubber Seal