[Earring Making Supplies] Earring making kit comes with totally 1650 pieces of earring posts and backs. Great value earring findings for earrings making, earring repair and DIY earrings[Assorted Sizes Earring Studs] These earring blanks are available in 5 different sizes (4mm, 5mm, 6mm, 8mm, 10mm), provides you a good selection to match up with different kinds of earrings charms[Earring Backs] There 2 styles of earring backs for studs in this earring supplies kit, the butterfly earring backs are made of stainless steel. While the rubber earring backs are made of silicone that are flexible and safe for use[Earring Supplies for Jewelry Making] The DIY earring supplies contains earring posts and backs besides the charms for earring making, which can be applied to make all kinds of stud earrings, as well as to repair your favorite earrings or other jewelryColour:As shownMaterial:Metal + SiliconePackage Contents:1650 pieces * earring posts and backsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.