．For SRAM® GXP system
．Fits Super Boost 148 HUB
．Material: AL7075-T651
．Teeth: 32T ~ 38T
CR-GXP12-157-HA
．For SRAM® GXP system
．Fits Super Boost 157 HUB
．Material: AL7075-T651
．Teeth: 38T ~ 42T
USD: 52.98/ Euro: 51.27