The length of each hook is 20mm (0.79 inch), the thickness is 8.78mm and the diameter of the jump ring at the bottom is 2mm.
DANGLING Hypoallergenic Earring Hooks 120PCS, Silver
Nickel free findings and supplies for jewelry making, Hypoallergenic
Kurtzy 500 Pack Silver Plated Earring Hook Earrings by Nickel Free - Jewellery Making Findings - Earrings for Men, Women and Children - 2mm Open Threading Hoop : : Home & Kitchen
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500 Pack Silver Plated Earring Hook Earrings by Kurtzy - Nickel Free
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Paxcoo 2400Pcs Earring Making Supplies Kit with 24 Style Earring
Kurtzy 500 Pack Silver Plated Earring Hook Earrings by Nickel Free