Shotgun choke
constriction is marked on band so there is no need to remove choke to verify
size.
It is not recommended
to shoot Federal's Black Cloud or any of their ammunition that utilizes their
Flight Control Wad in ported chokes due to interference with its
performance.
Please note, this choke does not fit Franchi Aspire, Benelli Montefeltro, or the Beretta A400