Materials glossary / Finding and chain
Lever back
On the label: Lever back · Finding and chain
What it is
A hinged hook that snaps closed behind the lobe; secure for drop earrings.
Finding and chains: The working parts: clasps, posts, backs, jump rings and settings. A piece is only as good as its findings.
In the research
No PubMed papers mention this material with jewelry, allergy or eyewear; that is usual for findings and trade terms.
Pieces whose listing names it
2 on the siteMatched from the words in the supplier's listing; the full material line is on each product page.
Other finding and chains
Clasp & Lens describes materials from the public record and does not appraise, grade or test pieces; what a listing states is the supplier's statement. If a piece causes a rash, take it off; a reaction that spreads or blisters is a doctor's question, and sunglasses are no substitute for impact-rated eye protection where that is required.