These little devices may not be the integral part of your rack, nor may they see a whole lot of use at all. But when the time comes, you'll be glad you have it. For what you have to put up with in weight (all of 39 grams), it's just so much handier than using a prusik. While they're not as easy to work with as full size ascenders (of course), the device really does function well, without the fiddling the prusik might give you, and because of the teeth, it won't slip.
I'll agree $20 is a bit steep for one, given that a good solid biner will only run you $5 or $6, but I won mine in a raffle at a trail day (hint.. go to trail days, you get cool stuff!!!).
Overall though, these things are worth their weight in gold, though that ain't a whole lot in this case. There's really just no good reason not to bring one alone... it can save a lot of hassle later on.
The Petzl Tibloc is multifunctional: for rescues, hauling systems and rope climbing. Petzl Tibloc Features: Very small and lightweight. Chrome-plated ...More at Oregon Mountain Community
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