Great value Shimano Alivio M431 Hybrid/Trekking Dual-Pull Front Derailleur – Conventional Swing offers crisp performance on and off-road for 9-speed drivetrains. Advanced light action design uses smooth-running pivots and linkages for effortless, accurate shifts. Conventional swing design for positive shifting action, Dual pull design allows it to be used with top or bottom cable routing. Multi-fit design for 28.6, 31.8 and 34.9mm frame tubes. For Hybrid or trekking type bike designs with 63-66 degree chainstay to seat tube angle. Can be used with either 44 or 48 tooth outer chainrings. Compatible with 9-speed drivetrains.