Deluxe Locking Pin Back for Enamel Pins (Set of 2) – The Gray Muse
Amazon.com: 100PCS Pin Backs, Metal Locking Pin Backs, Brass Clutch for Brooch Tie Hat Badge Insignia Pin Backs Replacement (Gold)
Disney Pin Backs - Locking-PinAcces-7041
Amazon.com: Aylifu Tie Tacks and Clutch Backs Set, 30 Pieces Metal Pin Backs Locking Pin Keepers with 30 Pieces 10mm Tie Tacks Blank Pins (Gold)- No Tool Required