1.5" Metal Flatback Button Set – American Button Machines
50 x Self Cover Flat Back Buttons Size 45mm 75L Very Large Button with Tool | eBay
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25mm Round Buttons 4 Hole Buttons Flat Back Buttons Choice of All size & Colours | eBay
Gift_Source 30 Pcs 15mm Star Shaped Buttons with 2 Holes, Resin Pentagram Buttons Star Small Button Flat Back Buttons for Clothes Sewing, Crafts, Embellishments, Scrapbooking, Christmas Ornaments : Amazon.co.uk: Home & Kitchen