JEBS High-VoltageChoke Tubesare designed to easily and effectively handlesteel,lead,bismuthor any other shot you wish to shoot. The patented design gives the shooter a more consistent shot pattern, a more distinctive &shortened shot-stream, and incredible knock-down power for those much needed "longer shots." Choke Tubes are offered in Ported as well as Non-Ported models. Features:Ported or….