100 Sets 9.5mm Prong Press Studs Open Ring No Sew Snaps Buttons Fasteners + P. 9.5mm Diameter Prong Ring Snap Fasteners and Snap Buttons Use for dummy clips, bandana bibs, baby grows, keyrings etc Press Studs size : Diameter 9.5mm. Prong size: 3.5mm Each set contains 4 parts: a male, female and 2 prong rings The prong ring is colored and the base ring is silver