The Quella Nero bike is a high quality bike and very good value for money. It is formed by a very durable, diamond-shaped steel frame, and a Deep-V wheel set. Both absorb the blows and movements of any urban route without problem. It is a bicycle with flip-flop rear hub, that is, it comes with a fixed sprocket on one side of the wheel and a freewheel on the other side. You can turn the rear wheel to exchange between fixie and single speed bike so that you go with the pedalling mode you prefer. The development that this urban bicycle brings as standard is 44-16, to provide a balance between acceleration and maximum speed. An ideal bicycle to move around the city.