Tandy claims copper rivets are the strongest rivet known to man. Seems dubious to me. But maybe they hold better than rapid rivets.
Copper Blind Pop Rivets with Brass Mandrel - #42 / #44, Available in individual bags of 100 and boxes of 1000. Discounts for quantities., Copper pop
1/8 Copper Blind Pop Rivets with Brass Mandrel
JUNESunShine 84Pcs, Copper Rivets and Burrs, 9 and #12 Burrs Setter, Leather Rivets Fastener Install Setting Tool with 4mm Leather Hole Punch Cutter
How To Rivet Leather - Leathersmith Designs Inc.
Solid Copper Rivets & Burrs - Made in USA
Buy WUTA 50/100 Set Solid Brass Leather Rivets With Burrs, Copper Rivet Studs Permanent Tack Fasteners Craft, Belts, Halters, Bridle at Aliexpress for
WUTA 50/100 Set Solid Brass Leather Rivets With Burrs, Copper Rivet Studs Permanent Tack Fasteners Craft, Belts, Halters, Bridle
43 Pcs Pure Copper Rivets and Burrs set,Brass Installation Tool
Rivet Buying Guide - Rivet Sizes - All Points Fasteners
Copper Cookware Rivets
Copper Rivets And Burrs
Copper Pop Rivets with a Copper Plated Steel Mandrel Grip Range: 0.188 - 0.250 Commonly used in Roofing, Siding & Flashing Applications Used both
Copper Pop Rivets 4-4 (1/8Diameter x 1/4 Grip) Steel Mandrel Blind Rivets (250)