Small Key Chain Rings Sizes: Featuring outside diameter of 1/2"(15mm) and wire thickness of 0.047"(1.2mm), it is suitable for a variety of applications, including holding keys, car keys, ID tags, pet tags Package Includes: Supplied in a bulk package of 400 pieces, the silver finish provides a refined look, enhanced by smooth edges. this quantity supports extensive crafting, repair, and organizational projects Keychains Material: Crafted from iron with a protective nickel coating, these key rings are built to withstand regular use without rusting. For optimal results, it is recommended to avoid prolonged exposure to moisture or high-humidity environments Double Loop Design:Facilitates effortless opening and closing without requiring additional tools,allowing users to quickly attach or detach items Versatile for Uses:Use them to bundle house keys,car keys,or as componentsin DIY projects.They are also suitable for crafting pet collar tags,personalizedkey chains,and organizing small accessories,allowing you to apply themacross different needs Color: Silver Material: Metal Package Contents: 400*key rings Only the above package content, other products are not included. Note: Light reflection 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.