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Return& Item Quality control:
1 year warranty
Lower Bearing + Upper Bearing for Pinarello Tapered 1 1/8" - 1 1/2" Headset
Bearing Size : 30x41x6.5 & 40x52x7
Steel：
Race Material: P6 bearing steel
Ball Material: P6 bearing
Ceramics:
Race Material: P6 bearing steel
Ball Material: Nitrided Silicon Ceramic SI3N4
Ceramics:
Race Material: P6 bearing steel
Ball Material: Nitrided Silicon Ceramic SI3N4
Fit with 1 1/8" - 1 1/2" Headset and Frame
