Feature:Great kit 100 pieces 3-12 mm earring pin studs,meet your different needs,Ear studs are made of stainless steel, safe and non-toxic, and will not rust. Suitable for any people. Please heat or use alcohol to rub before use.Earrings posts with flat pad allows you to DIY your earring finding With some rhinestone and crystals flat back via hot liquid glue.Material: Stainless steel ,Color:SliverSize:Pad Diameter:3/4/5/6/8/10/12mm,Pin Length:8mmQuantity: 100Pcs, Note:Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon.And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes:100 Pcs Diy Flat Earrings Pads100 Pcs Diy Earrings Backs.