Which metal snaps you use depend mostly on your personal preference and on which size best complements your project. For that reason, we are unable to provide specific size recommendations beyond the information below.
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Open-ring grip snaps are commonly used on baby/children's clothing and other basic crafting projects with thinner types of material. Because the prongs are short, these are not suited for thick or dense material and should only be applied with one of our KAMsnaps tools. Size 14 (9mm diameter) and size 16 (10mm) can generally be used in the same applications.
Fashion spring snaps for a more visually appealing decorative touch. Great for wallets and purses. Size 14 (9mm diameter) for light-weight applications, size 20 (12mm) for general use, and size 24 (15mm) for thicker material.
Utility spring snaps on projects that call for a more heavy-duty snap, or with thicker fabric like leather. This style has the longest prongs of the 3 different metal snaps we carry and are less bulky than the fashion spring style. Size 20 (12mm diameter) is more suited for general use while size 24 (15mm) is recommended for heavy-duty applications.