These are surgical stainless steel earring parts, safe for your skin. This listing is for 10 pairs. Made from the same material as scalpels and scissors used in surgical procedures. The stainless steel used is high-quality SUS316L. Highly recommended for those suffering from metal allergies. They are praised for not causing itching even in the summer. You can confidently recommend them to others, so why not professionals, too, for your own creations? In my shop, even those who experience allergic reactions to gold or titanium are using them. They have an easy-to-use, simple shape. Length: 18mm Wire thickness: 0.7mm We also have listings for 20 pairs and 50 pairs. No comments needed, instant purchase is OK.