When converting a frame with vertical dropouts for use with a singlespeed or fixed-gear, the derailleur hanger is just standing there.
This plug will protect the hanger threads from dirt and mud
For any questions please e-mail us:
To be sure if this the right part, please send us photos of:
1. Your derailleur hanger from both sides;
2. And if possible bike‘s frame part photos, where dropout was attached.