34.9mm Clamp On. There are marks and wear consistent with age and use. Good used condition.

Brand: Shimano
Compatible Bike Type: Mountain Bike
Number of Chainrings: Triple
MPN: m571
Mounting Type: Clamp-On
Number of Speeds: 3
Number of Items: 1
Cable Pull Type: Top Pull
Colour: Silver
Part Type: Front Derailleur