The Thompson Center 209 Primer Adapter will adapt primers to fit your muzzleloader of choice. These convenient reloading tools were designed by Thompson Center to work with their Black Diamond or Woods muzzleloaders. The Thompson 209 Muzzleloader Primer Adapter expands the potential of your rifle by allowing you to use many different types of ammunition in the Thompson Center reloading tool. If you use these primers with the correct striker, you can have reliable shots every time. Adapt your primers to your Woods or Black Diamond muzzleloader using the Thompson Black Diamond/Woods 209 Primer Adapter Tool. FeaturesAdapts primers for use with muzzleloaders by Thompson CenterBuilt for the Black Diamond or Woods muzzleloaders