CCI Percussion Caps provide the reliable, consistent ignition blackpowder shooters need. They feature non-corrosive, non-mercuric priming compounds with soft, ribbed copper cups, and they are available in a variety of styles. Specifications: Caliber: Black Powder Color: Brass Finish: Solid Brass Material: Copper Model: Percussion Cap Quantity: 1000 per Box, 5 per Case Size: #11M Type: Percussion Caps