Dropout Open Grommet for Shimano Di2 Wire Read more.
GR-DRPOUT-GUIDE
Compatible with: Rca, R-Series/S2/S3 (2014 - 2020), S5 (2015 - present), C-Series, P5 Disc, P-Series, P3X, PX-Series, Aspero, Caledonia-5
