It's called the EZ Earring Tool and it's made by
Metal Designs. It's a jig for making your own earring wires.
The original one I got for a Christmas present from my
sister (Bev-No Easy Beads). That's the one pictured on the
left, regular fishhook wire earrings. I made some in copper.
Price on that is $25.97 from Widget Supply.

The EZ Earring ll is for french hoops. Made those from Vintaj Bronze
wire I got from Jeanette Blix shop. The jig came from Widget Supply.
They are a "hard tool to find" place and have all kinds of craft and
jewelry making supplies. Fast on the shipping too.
The price on the french hoop jig is $19.97 plus shipping.
These tools are well made and the instructions are simple.