Shimano Altus M310

Model: Altus, M310
Color: Black
Speed: 8S, also for 7S
Teeth of freewheel: 34T max, 11T min
Weight: about 313g

Shimano Acera M360

Model: Acera M360
Speed: 8S, also for 7S
Teeth of freewheel: 42T
Weight: about 200g
Color: Black/Silver