I made this tool for my mom so she could easily insert safety eyes into crocheted or knitted items :)
All that's needed is 1 m6x20 screw and a nut to thread onto it!
Simply place each handle onto each other into the closed position, screw in the screw, and thread the nut on.
How to use: Simply thread the pin of the eye and the back into the hole side of the pliers, and close them. The dimple will push the eye into place and voila, safety eye inserted!