3Pcs 1/4 Inch Hex Shank Tungsten Carbide Glass Drill Bits Set Titanium Coated Power Tools
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https://stores.ebay.co.uk/Silver-Coasts/Sewing-Leather-Craft-Tools-/_i.html?_fsub=3104412013&_sid=853213773&_trksid=p4634.c0.m322
these rivets can be used on leather, or fabric, they are nickel free, and non rust.