Description: Made of stainless steel, corrosion and stain resistant, durable and sturdy, lightweight and easy to use. Inner Size: 16mm,14mm,12mm,10mm,8mm,package includes 20 pieces blank earring pins,enough to meet your DIY needs or replacement. Create beautiful earrings: with flat round pad, the pin stud posts can be applied to DIY beautiful and elegant earrings with flatback rhinestone and crystal by using hot liquid glue. Great DIY beautiful and elegant earrings with flatback rhinestone and crystal Cabochon by using hot liquid glue. Warm notice: small parts, please keep these craft earring accessories away from little kids. Specification: Material: Stainless Steel Color: Silver Size Chart: Inner Size: Approx. 16 mm / 0.63 inch Inner Size: Approx. 14 mm / 0.55 inch Inner Size: Approx. 12 mm / 0.47 inch Inner Size: Approx. 10 mm / 0.39 inch Inner Size: Approx. 8 mm / 0.31 inch Package Includes: 20 Pieces Stainless Steel Stud Earring Blanks Note: 1.Please allow a little difference between the real item and the pictures due to monitors difference. 2.Please allow some measurement errors.