Allen wrench: a slim hexagonal
(six-sided), L-shaped metal bar.
Crescent wrench: traditionally-shaped
wrench that adjusts by turning the small, threaded
cylinder located below the wrench's "mouth."
Derailleurs: the parts responsible for
changing gears. Complex and susceptible to
damage-that's why you wrap them during shipping.
The front derailleur is located a few inches to the
right of the central, vertical tube of the bike
frame, towards the bottom. The rear derailleur is
located a few inches below and to the right of the
rear hub. Both have the chain running through them.
Handlebar stem: the metal post that holds
handlebars and is inserted into top front hole of
the bike frame.
Hub: the central axis of each wheel. Look
for spokes, follow them towards the center, and
there's the hub.
Quick-release mechanism: does what it
says. Located at the seat post hole on the frame,
and on the front hub (right side) and the rear hub
(left side).
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