Amazon.com: 100 Pack Butterfly Clutch with 10MM Blank Pins, CBTONE Gold Tie Tacks Blank Pins with Clutch Back for Craft Making, Badge Insignia, Citation Bars, Service Bars, Toy Pins and Jewelry Making :
Amazon.com: SUBANG 40 Pieces Metal Pin Backs Locking Pin Keepers Locking Clasp with Storage Case
Amazon.com: Beadaholique 24-Piece Bar Pin Back Glue On, 3/4-Inch, Silver Tone