The Shimano Altus FD-M371-6 is a 3x 9 speed front derailleur for casual use that offers a light action and improved clearance for wide tires and mud.
It features a 34.9mm mounting clamp, which can be reduced to 28.6mm or 31.8mm using the supplied adapters.
Optimised for a 50mm chain line and 66 - 69 degree chainstay angles , it can be setup for either top or bottom pull action.