Check the listing for details. U.S. SELLER Size #12 SOLID COPPER RIVETS & BURRS/WASHERS 1 dozen_12 Sets 1" Long. Condition: New. Listed at 6.95 USD. 24 pieces of SIZE #12 x 1" LONG Package contains 12 Sets of RIVETS & BURRS 12 SOLID COPPER RIVETS12 SOLID COPPER BURRS (washers)DIMENSIONS: LENGTH 1"HEAD DIAMETER .37" or 9.5mm. About 5/16" (Burrs match head diameter)SHAFT a little over 1/8" or about 3.5mmMORE SIZES BRASS & COPPER RIVETS AVAILABLE HERE Extra copper burrs are available HERE Size #9 RIVET SETTER available HERE Size #12 RIVET SETTER available HERE Size #14 RIVET SETTER available HERESeller's PolicyI always ship in the next out-going mail after I receive your payment.Please feel free to ask questions. While I accept returns, time is saved if you know in advance exactly what you are buying. Ours is a smoke-free home.Your satisfaction is important to me. I will resolve any problem you might encounter before you leave feedback! Thank you for looking!