AR500 is awesome stuff but even it can't last forever. If you break a hook on your double hook t-post mount you can swap it out with one of these, without tools, in about 5 seconds.
I really like the T-Post mounts because of how loud the steel rings with them! They are stupid easy to set up and because I use a heavier gong, I have no issues with it moving on me. I mainly shoot these with pistols, but the replacement hooks are good to have in case you ever damage a hook.
