The bottle jack also referred to as a hand jack, can allow you to lift your car for inspections or roadside assistance. Vertical shafts provide support to the weight of a bottle jack. Jacks with cylinders and pistons are generally used for lifting vehicles. Fluid power is used to exert force on this tool just as it is on a floor jack. The cylinder is filled with oil when … [Read more...] about How Does A Bottle Jack Work? How To Use A Bottle Jack & Is It Safe?