Mechanical friction device

Bulldog bone works on various line diameters easily, will run (jerky but moves) with pitch, easy on and off rope for effortless redirects, tends smoothly, works SRT and dDRT with no changes.

I really can't recommend it highly enough. It does everything the other devices do and then some
 
@KevinS there was a list of series of serial numbers in question, not all from a certain generation. I truly don't think it's a device to he afraid of. That said, I have two bulldog bones and no zig zags. I'm honestly back to being mostly a ropewrench person
 

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