产品描述
2 个密封轴承 / 36 个棘爪以及（搭配）54 个棘爪
AL7075/Cr-Mo Shimano 8/9/10/11/12S for MTB and ROAD
AL7075/Cr-Mo Shimano MicroSpline 12S for MTB
AL7075 /Cr-Mo Sram XD/XDR Driver for MTB and ROAD
