Are you looking for snow chains that are fast, safe and easy to fit? Watch this video about how to use snow chains on the tires of your car. The aluminium central bar is at the heart of the automatic tensioning system: just open out the built-in pedal and press down with your foot to activate tensioning. The chain will automatically slip around the tire as soon as the car moves off. External release system: just press the red buttons on the aluminium bar and release the safety catch, and the chain comes away. Super easy! Visit: http://www.racknroad.com/