that's the problem with chain - it has no give at all. If you have to jerk it, you're multiplying the force on the chain many times over. A chain has to be rated many times over what you're pulling with it. Most of the tow chains I've seen on the market are for pulling a car down a flat road, NOT for getting it unstuck. That little chain in the video is nowhere near heavy enough to be jerking that Jeep out of mud.
