Using Earring Card Punch Tools with Adhesive Front PVC Earring Cards - YouTube
Earring card punch, plastic and "pewter" (zinc-based alloy), purple / black / grey, 4 x 2-1/2 x 2-1/4 inches for leverback / kidney / fishhook. Sold individually. - Fire Mountain Gems and Beads
Amazon.com: Double Post Punch
Foldover Hang Tag/Display Punch – Easy Earring Cards
65-170-01 Easy Earring Card Double Post Punch - Rings & Things
1 Easy Earring Double POST Earring Card Punch To Make Your Own Earring Cards! | eBay