14KY,14KW,18KY & 18KW Guardian II Positive Locking 6.1mm Earring

These are the Guardian II Positive locking 6.1mm outside diameter earring backs with Comfort triggers that fit a 0.89mm diameter post.  They are also called Guardian II Ear Nuts and Guardian II Safety Earring Backs. Positive locking earring backs have been on the market since the French first produced the ZOP system in

Poste de oreja y respaldos — Otto Frei

Earrings — Otto Frei

New Products @ — Page 8 — Otto Frei

Ear Post & Backs — Otto Frei

Ear Post & Backs — Otto Frei

Poste de oreja y respaldos — Otto Frei

Ear Post & Backs — Otto Frei

These are the 6.1mm outside diameter original Guardian Straight Trigger earring backs with matching .035 diameter x .395 length 2-notched ear post.

14KY, 14KW, 18KY, 18KW & Platinum 6.1mm Guardian Positive Locking Post & Backs Sets

Earrings — Otto Frei