Amazon.com: 100 X 10Mm Gun Metal Two Piece Double Cap Tubular Rivets for Leather Crafts - Stud Decoration for Handbags, Jeans, Belts, Dog Collars - Sturdy Fastener for Sewing and Clothing Repair :
3/16” (4mm) Double Capped Tubular Rivets
Tubular Rivets Solid Brass 9/16" pkg of 100 - Leathersmith Designs Inc.