All of our jewelry is hand assembled in the USA. Charms are attached to an 21.6" Stainless Steel Ball Chain necklace with a stainless steel lobster clasp. Necklace is packaged on an It's All About...You! display card. Stainless Steel is high quality, durable, corrosion resistant and requires little maintenance. Necklace ball measures: 2.4mm. Tip: In the bullet points, the size of the charm is listed. It is listed without the jump rings. To determine the size of the charm, use a ruler on the CM (Centimeter) side. The tiny marks between the Centimeters are Millimeters. Should you have questions or concerns about your new Stainless Steel Ball Chain Necklace, It's All About You Jewelry is always available to help you. Quality customer service and superior products are our top two priorities. We hope you love your new necklace as much as we do!