This is a ring closing ring. So confusing. It’s a ring you wear on your finger, but it has slots in it that you can use to grip one side of a split ring. Then you use a pair of duckbill pliers to twist the ring closed. You could use two pairs of pliers, but this is more convenient if you’re doing a lot of rings.
Location: Box 16
Have you used this tool? Think my description is all wrong? Have a better example? Comment now with any thoughts you have about this tool!