MODEL: RD-TZ31-A bike rear derailleur, Compatible with 6 and 7-speed SIS Index Shifting drivetrains.
IMPORTANT: The bike rear derailleur is hanger mount (hub bolt mount), not direct mount.
EXCELLENT PERFORMANCE: Accurate gears provide light and stable shift performance, and making riding easy and comfortable.
MATERIAL: Made of high-quality steel materials,durable and long service life. Easy to install and disassemble.
APPLICATION: Suitable for MTB mountain bike, road bikes, variable speed bicycle, folding and city bikes. It is your indispensable bicycle accessories during your cycling journey.