Pro-Shot Brass Snap Caps With Wool Mops. Pro-Shot's quality brass snap caps have wool mops with natural lanolin that fit into the chamber area for chamber rust protection. Oil such as Zero Friction may be added to wool mop for extra rust protection. Quantity 2 per package. Specifications for Pro-Shot Brass Snap Caps With Wool Mops: Manufacturer: Pro-Shot Caliber: .410 Bore Quantity: 2 Package Contents: Pro-Shot Brass Snap Caps With Wool Mops The Pro-Shot Brass Snap Caps With Cotton Mops .410 Gauge Two Per Package 410SCP is a quality addition to the Pro-Shot lineup. For more great deals on Snap Caps by Pro-Shot please browse our Pro-Shot Shooting Accessories page. Pro-Shot Brass Snap Caps With Cotton Mops 12 Gauge Two Per Package