This item may be regulated for export by the U.S. Department of State or the U.S. Department of Commerce. Please see our Export Policy prior to placing your order. \r\nSpecial angled lateral ports impart spin on the shot charge as it passes through the choke, resulting in select core pellets migrating to the outer portion of the pattern. The result? More even pellet distribution, pattern-wide.All Helix chokes come with Brileys exclusive Spectrum colorband identification system.Lead shot only. Brand: Briley Manufacturer Part Number: BHPHB12CYL Manufacturer: Briley Color: Black Oxide