Shimano Altus RD-M310 Rear Derailleur - 7, 8 Speed, Long Cage, Black

MegaPulley (RD-M310)
13/13T pulley (RD-M360)
Advanced light action
Wide link design for more rigidity and precise shifting
Top Normal Rear Derailleur (8/7-speed)
Color options: Black, Silve
Total capacity: 43T
SMARTCAGE pulley plate (RD-M310)