F30 Series Hubs.All new cassette 3 speed hub- 3 Speed internal gear hub without brake (freewheel).- Classic 3 speed gear ratio of 177%.- Compatible with 8 and 9 speed cassettes.- Compatible with standard MTB / ATB left hand shifters for front triple chainwheel.- Available with polished and anodised aluminum shell in silver or black.Weight - 1155g.