Used to shift the front gears
attached with clamp or bracket
Forms a box around the chain that attaches with a parallelogram to the mounting bracket
Linkage is held and moved with the pull of the cable
Springs back when the cable is tension is removed
Shifting only occurs when the rider is pedaling
The derailleur pushes the cage onto the cog above or below the current one
Has H and L limit screws to stop the limits of the travel
Can adjust height and angle w.r.t. the cog
Text Summarization may be use