Description1, WHAT YOU GET --- We have prepared 25mm key rings for you, key rings with chain, you will receive 150 pieces of open jump rings and 150 pieces of screw eye pins. A total of 450 pieces of keychain accessories that will meet your needs for craft projects.2, SIZE DETAILS Split ring size, approx. 1 (25mm) in diameter with 1 extension chain, the open jump ring is 3/8 (8mm) in diameter and the screw eye pin is 10mm x 5mm in length and width. Perfect for making keychain accessories3, CONVENIENT TO USE --- The bulk key rings with chain and connectors are convenient for you to attach charms, pendants or other accessories to. The set also comes with extra open jump rings and screw eye pins which makes it a complete set of accessories, so you don't need to buy additional parts.4, SUITABLE FOR DIY -- You can make your own keychain with this metal key ring. Suitable for making some small project, arts and crafts or gift making. Great accessories for making keychains.