Package Include -- You will receive 120 pcs leverback earring findings and 150 pcs open jump rings, the size of these earring findings are about 0.47" wide, 0.57" long, hole: 1.2mm. Open jump rings inner diameter: 3.4mm. Easy To Use -- These leverback earrings have a eyelet to easily attach your jump ring, chain or pendant. Easy open and easy close, do not hurt your ears. They are really convenient for no-pierced earrings making. Comfortable to Wear -- These earring hooks are made of high quality 304 stainless steel, the edges on them are smooth, very friendly to your ear. Strong and lightweight, suitable for long wear. DIY Earring Parts -- The earring making kits are available in leverback earrings and opening jump rings, you could add pendant on the jump ring ,and used in the hole of leverback earring, perfect for earring making and earring repair. Lovely Gifts -- The lever back brass earring hooks are useful accessories for making your own jewelry designs, you could send them to friends, colleagues, it's a gift choice for birthday, Valentine's Day, wedding, Mother's Day and more.