To use this tool slide the ring towards your ear and find the groove in the ring. Pass the wire through the groove and rotate the ring so the groove is on the opposite side of the wire. As soon as you start pulling on the wire, the ring slides down the conical part of the tool and clamps the wire without slipping, at least on barbed wire. Haven't tried it with high stretch yet so can't comment on how it works with that. What I like about it is that it doesn't have aggressive teeth that cutβ¦