A Jack is a mechanical device, which is used to lift heavy equipments. The most common forms of jack are car jack, floor jack or garage jack used for performing maintenance of vehicles.

Car jack generally uses mechanical assistance to allow a human being to lift the vehicle. Mechanical jacks are usually appraised for maximum lifting capacity. More powerful jacks use hydraulic power to provide higher lift over greater distances. They are always associated with drills to turn the crank. A jack also comprises of gears and shaft.

Materials used for making Jack
Jacks are usually made of materials that are very strong and are suitable for withstanding heavy loads. Materials used for making good quality jacks are:

• Steel
• Aluminium

Safety Measures
It is always advised not to get under the car or vehicle, when it supported only with a floor jack.

Uses of Jacks
Jacks are an important device that should be always carried in vehicles while traveling, to avoid roadside hassles of changing tires etc.

Some important benefits of using jacks are:

• Jacks make raising and lowering of heavy loads smooth and easy.
• Used for changing tires.
• Saves roadside hassles by keeping driver and passengers free from grease and mess.
• Helps performing maintenance work of vehicles.
• Helps to avoid less physical effort.