Check the listing for details. #12 COPPER 3/4" RIVETS & BURRS / Washers. Condition: New. Listed at 6.95 USD. 24 pieces of SIZE #12 x 3/4" LONG Package contains 12 Sets of RIVETS & BURRS 12 SOLID COPPER RIVETS12 SOLID COPPER BURRS (washers)LENGTH 3/4" or 19mm 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 HERE Seller'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!