How to Choose Belay Devices

Used below the rappel device, the Petzl Shunt works as a rappel backup and replaces self-jamming knots like the Prusik. It works on both single and double ropes.
Imported.
View all Petzl Belay and Rappel Devices| Best Use | Climbing |
|---|---|
| Assisted Braking | No |
| Suitable for Rappelling | Yes |
| Fits Rope Sizes | Single ropes: 10-11 millimeters; double ropes: 8-11 millimeters |
| Weight | 188 grams |
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I use this as my rappel backup. It's super fast and easy, though much heavier than a hollowblock. Still, it's simpler and less accident-prone in my opinion. I also really like how you can hang off of it with confidence; it just locks in place. It's the same camming idea as a Grigri (pinching the rope(s)). I've also used it to rope solo or take photographs while on rappel.
I use this as a back up for my climbing system. I use a variety of climbing techniques and the Petzl Shunt ascender flow easily up the rope on my safety line whit very little fuss.