Discover our high-quality ring spring with a diameter of 12.5 mm, made of stainless brass. Thanks to the high locking power, these metal buttons are ideal for a variety of applications, including: clothing: perfectly suitable for jackets and leather clothing. Bags and backpacks: additional safety and durability for your tote bags. Sports and camping area: robust solution for tents, equipment and more. Please note that the specified size refers to the outer diameter of the cap. Trust the quality of our ring spring Pint buttons for your projects!.