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2. Bicycle lock - Wikipedia

   en.wikipedia.org/wiki/Bicycle_lock

   A chain lock is a chain with a lock. It often has a key or a combination lock attached to it. A long enough chain can pass through both wheels, the frame and attach the bicycle to an immovable object. Because of their inherent flexibility, chains are easier to secure around tricky-shaped objects than D-locks. Chains vary widely in their ...

3. List of bicycle parts - Wikipedia

   en.wikipedia.org/wiki/List_of_bicycle_parts

   Basket: it is an optional attachment on a bike and is used for carrying things; Bearing: a device that facilitates rotation by reducing friction; Bell: an audible device for warning pedestrians and other cyclists; Belt-drive: alternative to chain-drive; Bicycle brake cable: see Cable; Bottle cage: a holder for a water bottle

4. Bicycle chain - Wikipedia

   en.wikipedia.org/wiki/Bicycle_chain

   Bicycle chains Roller chain and sprocket. A bicycle chain is a roller chain that transfers power from the pedals to the drive-wheel of a bicycle, thus propelling it.Most bicycle chains are made from plain carbon or alloy steel, but some are nickel-plated to prevent rust, or simply for aesthetics.

5. Kryptonite lock - Wikipedia

   en.wikipedia.org/wiki/Kryptonite_lock

   Until 2004, Kryptonite locks used the tubular pin tumbler locking mechanism. In 2005, after it was demonstrated that the tubular pin tumbler locks used on Kryptonite locks could easily be opened with the shaft of a Bic ballpoint pen of matching diameter, [9] Kryptonite changed their locks from the tubular to a disc mechanism, preventing the use of cylindrically shaped objects to defeat the ...

6. Chain - Wikipedia

   en.wikipedia.org/wiki/Chain

   Chains can be classified by their design, which can be dictated by their use: Those designed for lifting, such as when used with a hoist; for pulling; or for securing, such as with a bicycle lock, have links that are torus shaped, which make the chain flexible in two dimensions (the fixed third

7. Sprocket - Wikipedia

   en.wikipedia.org/wiki/Sprocket

   In the case of bicycle chains, it is possible to modify the overall gear ratio of the chain drive by varying the diameter (and therefore, the tooth count) of the sprockets on each side of the chain. This is the basis of derailleur gears. A multi-speed bicycle, by providing two or three different-sized driving sprockets and up to 12 (as of 2018 ...