For double chainset. Shimano Sora R3000 Front Derailleur. Clamp on 34.9mm. Missing top cover.

Mounting: Clamp-On
Non-Domestic Product: No
Brand: Shimano
Type: Front Derailleur
Custom Bundle: No
Model: sora
Compatible Bike Type: Road Bike
Number of Chainrings: Double
Mounting Type: Clamp-On
Modified Item: No
Part Type: Front Derailleur Clamp