Federal's new Black Cloud ammunition features devastating penetration which can now be delivered with unique features that help downrange performance increasing hunter success. The titanium coating helps the uniquely designed FliteControl Wad in the Black Cloud ammunition perform downrange with less build-up in the choke and allows the Flitestopper shot to do its job this increasing your take in the field. These chokes are specifically designed to get the most performance from Federal's new Black Cloud Ammunition, but perform extremely well with other steel shotshells.