Durable material: these earrings hook are made of stainless steel, which is durable and long-lasting to use,not easy to rust, fade or break, lightweight and little burden to your ears, can accompany you long time Design:The earring hooks surface is smooth beautiful curves and dynamic styles and can be worn smoothly into the ear. The earring backs are durable, allowing the ear hook to stay firmly on the ear. 304 Stainless Steel Earring Hooks Settings: about 18x16x0.8mm, hole: 2.5mm, 100pcsopen jump rings: about 5x0.8mm,100pcs; Wide Application:These earring making kit applicable to different occasions, through your own design DIY to create your own style, show your own personality. DIY:These earring making supplies are great ideal for your making earrings, DIY jewelry making crafting projects. Use them with other jewellery findings to create charming jewelry or beautiful decoration,to show your personality.