Amazon.com: Siwoms 2-Pairs 18K Gold Plated Locking Earring-Back Replacements Secure for Diamond Studs, Hypoallergenic Sterling Silver Backings for Notched Post (0.7~1.0mm)
Amazon.com: Gold Earring Backs, Earring Backs Gold Hypoallergenic Replacements for Stud White Gold Silver Locking Silver Flat Earrings Backs
Amazon.com: YOIHUR Locking Earring Backs for Studs,18k Gold Bullet Earring Backs Replacements for Studs, Secure Locking Backing for Sensitive Ears(Gold 4 Pairs)
Amazon.com: Locking Earring Backs for Studs,18k Gold Earrings Back for Studs Secure,Hypoallergenic Earring Backs Apply to Earring Backs for Droopy Ears (6 Pairs)
Gold Tone Locking Earring Backs Sterling Silver Earring Backs For Studs A4395 | eBay