Derailleur: apparatus used to transfer the chain from one toothed wheel to another.
Shifter: solid, movable arm, attached to a fixed point, that increases applied force.
Locking bolt: piece of metal, placed at the centre, with a head at one end and a thread at the other. Used with a nut.
Control cable: set of braided steel wires, used to control the brakes.
Sheath bushing: piece that holds the brake cable in place.
Control cable: set of braided steel wires, used to control the brakes.
Tension spring: part that returns a second part to its initial position.
Adjustable stop screw: small piece of metal that regulates the tension of the gear cable.
Roller: metal protuberance used to transfer the chain from gear to gear.
Frame or roller: mechanism that permits the operation of the moving part of the bicycle.
Clutch: cylindrical part.
Jockey roller: metal protuberance used to transfer the chain from gear to gear.
Cable: set of braided steel wires used to control the brakes.
Chain guide: part of the mechanism guiding movable parts.
Nut or hub: piece of metal with a threaded hole at its centre. Used with a bolt.
Gear: wheel of the gear system.
Frame: chassis of a bicycle.