5D1 Shimano CN-E6090 CHAIN -Specifically designed for E-bike, long service life, resistant to breakage -High drive efficiency:, quiet operation -Includes Shimano chain pin for installation -Compatibility: 10 Speed e-bike systems -Size: 138 links 1709902(003)3/3181522prebook(20:16:10/10/22:ari----#8/15/22(3:11/23/22:ari-----1:12/9/22:ARI----1:rtn on 1/23/23 90823(15:9/11/23:ari 2/13(-1) 3/5(-1) 3/5(-1) 30424(10:3/6/24:ARI