Great value Shimano Alivio Hybrid M412 Dual-Pull Front Derailleur Conventional Swing offers crisp performance on & off-road for 8-speed drivetrains. Advanced light action design uses smooth-running pivots & linkages for effortless, accurate shifts, Top 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 & 34.9 mm frame tubes to fit a variety of frames.