SHIM designed to drop the rear of the front derailleur cage so that the chain does not rub on the bottom of the cage.
Shim designed to go between the Front Derailleur hanger and the Front Derailleur – thicker part of the shim on the top, thinner part of the shim on the bottom.
Shim is 20mm tall x 9mm wide;
Top = 2mm thick, Bottom = 1.4mm thick
1 SHIM per package