e-thirteen-lg1-chain-guide-28-38t-bash-iscg-black
e-thirteen-lg1-chain-guide-28-38t-bash-iscg-black, e*thirteen Chain Retention SystemsWearplates have chainring size indicators for simple adjustmentLower armature is adjustable and replaceableEasily change chains and chainrings w/o removing wearplatesISCG adapter plate (for use on frames with no ISCG tabs) sold separately