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

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