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2. Harbor Freight Coupon for 20% Off - AOL

   www.aol.com/news/2011-02-16-harbor-freight...

   Replace old tools or get new ones with this Harbor Freight coupon for 20% off any one item. Expires Feb. 19, 2011. Valid in store, online, or over the phone. Use coupon code 74990607 online or ...

3. Wheel chock - Wikipedia

   en.wikipedia.org/wiki/Wheel_chock

   Wheel chocks (or chocks) are wedges of sturdy material placed closely against a vehicle's wheels to prevent accidental movement. Chocks are placed for safety in addition to setting the brakes. The bottom surface is sometimes coated in rubber to enhance grip with the ground. For ease of removal, a rope may be tied to the chock or a set of two ...

4. Shock absorber - Wikipedia

   en.wikipedia.org/wiki/Shock_absorber

   Miniature oil-filled Coilover shock components for scale cars. A shock absorber or damper is a mechanical or hydraulic device designed to absorb and damp shock impulses. It does this by converting the kinetic energy of the shock into another form of energy (typically heat) which is then dissipated.

5. Freewheel - Wikipedia

   en.wikipedia.org/wiki/Freewheel

   In a fixed-gear bicycle, without a freewheel, the rear wheel drives the pedals around. An analogous condition exists in an automobile with a manual transmission going downhill, or any situation where the driver takes their foot off the gas pedal , closing the throttle : the wheels drive the engine, possibly at a higher RPM.

6. Locking hubs - Wikipedia

   en.wikipedia.org/wiki/Locking_hubs

   Locking hubs, also known as free wheeling hubs are fitted to some (mainly older) four-wheel drive vehicles, allowing the front wheels to rotate freely when disconnected (unlocked) from the front axle. This is done to reduce the mechanical resistance of the front-portion of the drivetrain when four-wheel drive is not in use. [1]

7. Freighthopping - Wikipedia

   en.wikipedia.org/wiki/Freighthopping

   Two hobos riding the rods. Most train hoppers simply rode in or above freight cars. Another historic method was “riding the rods“. In the early 1900s days of wood frame freight car construction, steel truss rods were used to support the underside of the car in order to provide it with the strength to carry heavy loads.