Strong stretch cord, bundled in a corrugated vinyl tube.
Rattler has a handle on one end, and a hook on one end that attaches to the ski of the stuck sled.
Cobra has hooks on both ends that attaches to the ski of the stuck sled and the rear of the tow sled.
Both the Cobra and the Rattler maximizes the pulling forces you can produce when pulling out a stuck snowmobile.
Both have keepers on the hook ends to keep the bunje from falling off the sled.
In my opinion if you don't have the Snobunje Rattler, Cobra, or both with you when you go sledding off trail you are asking for trouble.
When you get stuck you want to use as little energy as possible to extract yourself from where you are at. Undo stress cases fatigue, dehydration, undo sweating, and could lead to hypothermia.
I use both the Cobra and the Rattler when we get stuck. Some times the stuck situation determines which Snobunje you should use for getting unstuck.
Sometimes if you are in an area where you can't position the sled to get in front of you to get a clean pull, your only choice is to use the Rattler, or try to get into a down hill pull and use the other Snobunje aids.
If you have a clear area and get a sled in front of you for a tow the Cobra is my choice for towing. This bunje works like a dream.
When you are really stuck, and you have enough guys with you, hook up the Cobra & the Rattler together and multiply your pulling force. This method rocks as you see how fast Picker gets pulled out in the Rattler/Cobra pictures above.
The bottom line is, I highly recommend you bringing Snobunje with you anytime you go sledding. These products should be an essential part of your trail kit, especially if you go off trail.
Mine are with me anytime we go sledding now. So far I have had to use the 4-point tow, and both the Cobra & the Rattler when out exploring the outback. I am very glad I had these Snobunje Products with me, other wise I might of had a long, cold, walk back to camp!