I seen on you tube a man use bolts in the side of the car to jack it up dose any one know the size of the bolt used? T/k you

 

3/4" diameter, 10-12" long. Actually, 20mm is a better fit, but less widely available here in the USA.

 

You can also use the tow hook in your tool kit, it's threaded to match the side jacking point sockets as well as the front/rear towing point sockets. It's an odd coarse thread, not like any bolt you're likely to find.