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.
Not to mention that the link that breaks can fly "somewhere" at bullet velocity.
