The Thompson/Center Flexible 209 Muzzleloader Capper is creatively shaped to accommodate all scoped Muzzleloaders for instant and easy priming. Made from Bio-Flex, a silicone monolayer material designed for superior strength and durability, the capper stays soft and pliable in the most frigid, harsh conditions. The T/C 209 Flex Capper presents two 209 shot-shell primers for instant capping with one at each end, while storing six additional primers along it's face.