The 12SC Pro-Shot Products brings you our Snap Caps. These are crafted with exquisite brass heads and equipped with spring-loaded firing pins. This ingenious configuration aids in alleviating the tension typically generated when firing a shotgun. A unique feature of our Snap Caps includes cotton mops imbued with natural lanolin. These mops conveniently fit into the chamber area, offering extensive rust protection for the chamber.Designed with versatility in mind, this particular model is fully compatible with your 12 gauge shotgun.