Our earring backs are die struck, as opposed to cast. Die striking is a process of jewelry manufacturing that uses an immense amount of pressure to form precious metal into a desired shape producing a product of superior strength and durability. Cast jewelry uses a low pressure mold method of making jewelry that results in a lower quality item.
In order to ensure a secure fit it is important to match the gauge of the ear nut to the gauge of the ear post. Gauge sizes can be confusing; Keep in mind that the higher the gauge number, the thinner the post will be.
Measure the widest part of the threaded portion on the earring post. Use a digital gauge/caliper in order to obtain accurate results. Compare your results to our chart listed below. Order a threaded earring back that matches the thread size of your post. If your measurements are far below or above our listed sizes then it is possible that our threaded earring back may not fit the type of post you have or the style of threading on your post.
20 GAUGE = .82MM = .032
18 GAUGE = 1.0MM = .040
Screw the back to the post with a turning motion, much more secure than a push-on back! To put on, hold the earring back behind the lobe, and turn the earring from the front. That is easier to maneuver, and it avoids your hair becoming twisted into the back of the earring.
With the security of these earring backs, you can confidently sleep, swim, and play in your precious earrings until you are ready to take them off!