GET OUTSTANDING RESULTS WHEN YOU USE THE KNOCKDOWN POWER OF FEDERAL PREMIUM'S BLACK CLOUD AMMUNITION WITH CARLSON'S NEW TITANIUM COATED BLACK CLOUD CHOKE TUBE - 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 Extended tube is constructed of a Titanium-coated steel and comes in Mid Range and Long Range models. 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. The Long Range choke tube should not be used with any steel shot larger than BB or with any steel shot faster than 1550 fps. The Mid Range model can be used with all steel shot sizes.