KAM Snaps are a convenient and modern alternative to sew on buttons. They need to be attached by a tool that require no sewing. Commonly used for (but not limited to) modern cloth nappies, clothing, accessories and wet bags.
They're a size 20 (AKA T5) size which measures approximately 12.4mm.
Each full 'set' comes with 2 caps, 1 socket and 1 stud.