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DMM - Catch Backup Device
(Get this price if shipping outside EU)
DMM's answer to the inherent problems from when people were using Petzl Shunts as back devices (Petzl strongly discourage this now, saying it is not fit for purpose). One of the biggest problems was the panic response people had, grabbing the device which only forced it wide open and as such further accelerated them towards the ground ...
The Catch has a specially designed handle to use when dragging the device down, which when squeezed if panicked and falling (due to a main line failure) will disengage from the device, causing the Catch to lock up safely and stop the user from hitting the deck.
A classic rocker style back up device with added safety features.