RD-M390 Mountain bicycle bike 9 /27speed Riding Cycling MTB Rear Derailleur

feature:
1. Concave guide wheel screw
2. Smooth/easy to operate shift performance
3. Extensive connection design can achieve precise gear shifting and durability
4. Wide connection design, double servo structure, low profile design.
5. A variety of specifications to choose from

specification:
Material: aluminum alloy
Weight: 270g
Model: RD-M390
Speed: 9 speed / 27 speed
Colour: Black
Features: suitable for a variety of gear changing ranges (28-34T)
Recommended model: commuter ATV/foldable
Package Included:

Rear derailleur x1