12T/18T AL7075-T651 Pulley with carbon

3k cage for RD-R7150 12S (105 DI2)/ RD

R7100 12S.

MATERIAL: Carbon 3k Cage/AL7075-T651

Pulley

SPEC: 12T+18T

FOR: SHIMANO® R7150 12S (105 DI2)/RD

R7100 12S

COLOR: 3K Carbon

OPTION: Ceramics ball bearing.