Dragonfly Snap Charm Pendant for 20MM Stainless Steel Chain Fits Ginger Snaps Snap Metal Pendant for standard size snaps which measure 20mm or 3/4" diameter 18" Stainless Steel Necklace is included You also get our custom designed dragonfly snap valued at more than $6.00 and sold only by us Ginger snaps and all other standard size brands are compatible