Kenkio 120 Sets Sew-on Snap Buttons Metal Snaps Fasteners Press Studs Buttons for Sewing, 8 mm and 10 mm,Black and Silver : Amazon.co.uk: Home & Kitchen
50sets Metal Snap Fasteners Press Studs Snap Buttons Poppers - Etsy UK
PRYM Stainless Steel Pearl Snap Poppers Fasteners - 12mm (Pack of 10) - Trimming Shop
KAM Snaps T5 Popper Snap Fasteners -Size 20 (Pack of 50)