The Most Secure Earring Back. Period. The patented double locking technology fits all types and different sizes of earring posts, 0.6-1.1mm in diameter. Available in Platinum, Yellow Gold and Rose Gold. Hypoallergenic. Surgical stainless steel internal mechanism. Platinum and gold coating in 99.9% purity.
For larger earrings and easier handling, check out Chrysmela Extra
For details, watch this video.