11/19mm Star Studs with Alloy Pins and Fixing Hand Tool Set Coats Jackets. Press Studs Poppers Snap Fasteners Set With 3 Parts Fixing Hand Tool Kit Silver. The fastener is made of 1 Male Part (Duo Stud), 1 Female Part (Socket) and 2 Prong Rings (Bottom and Top Prong).
eBay