Shimano DURA-ACE track FC-7710 chain ring 50T NJS approved

bcd144, 50T condition:USED　It's a good condition. the list of SAL Economy shipping cost from Japan (no insurance, no tracking number, it means we can't do anything, if a forward company lost the baggage) (There isn't SAL Economy shipping to Taiwan and Vietnam)for AISA: US$4.2 (to Taiwan, Vietnam: US$5.7)for US/AUS/CAN/UK/EURO: US$4.8for SOUTH AMERICA: US$5.4 the list of EMS shipping cost from Japan (include the insurance and tracking number) for AISA: US$10 for US/AUS/CAN: US$13 for UK/EURO: US$16for SOUTH AMERICA: US$18