How would this work as a garrote? Is it sturdy? Really sturdy? Is there a warranty?

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Dog tag chains are designed to break away when snagged on something. That's why when we fused them inside gutted 550 cord, we still left the running ends exposed. If they were caught on something while exiting an aircraft, they would break away instead of choking you.

You're better off using gloves and piano wire.

Then why make it of Titanium?!?