1
In a bike, element you hold with your hands for balance and for turning left or right.
2
Round element over which the bike rolls.
3
Device with which you can stop (or slow down) your bike.
4
Rubber element, in contact with the road, which covers the wheel.
5
Metallic device set in the axis of the rear (back) wheel. It transmits movement from chain to the wheel.
6
Long metallic element which transmits energy from pedals to the gears.
7
Each one of the wires which connect the axis (middle of the wheel) with the rim (outer part of the wheel)
