These nipples are beautifully made in the USA by folks who know muzzle loading. These are made from a material known as Ampco. This material creates a nipple that has more toughness, resilence and durability than other nipples. The flash channel is sized and designed to create a more powerful and fast ignition. This one is for Ruger Revolvers. For #11 caps. Your order will contain Six Nipples. Thanks, Danny.