The Shimano Di2 Frame Grommets are rubber inserts which secure internally routed electronic (E-Tube) wires where they enter your bike frame.
Each set includes four rubber grommets. Choose SM-GM01 or SM-GM02 models.
*The SM-GM01 model is a 6mm circle. The SM-GM02 is a 7x8mm oval. If you're unsure which to order, your frame manufacturer should be able to tell you which fits your bike.
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