Jebs Choke Tubes High Voltage Waterfowl Black Nitride 12 Gauge Choke Tube Remington High Voltage .685 Modified Waterfowl Choke Tube Black Nitride. The patented design of the Jebs Choke Tubes High Voltage Choke Tubes gives the shooter a more consistent shot pattern a more distinctive and 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. All tubes are made from 17-4 Stainless and heat treated to 44 Rockwell hardness to accommodate any type of shot Steel Tungstun Hevi-Shot Lead or anything the shooter wants to shoot. The Jebs Choke Tubes High Voltage Waterfowl 12 Gauge Tubes are offered in Non-Ported models and in a black nitride finish. Specifications for Jebs Choke Tubes High Voltage Waterfowl Black Nitride 12 Gauge Choke Tube: Manufacturer: Jebs Choke Tubes Color: Black Finish: Black Nitride Gauge: 12 Choke Tube System: Remington Choke Gun Make: Remington Quantity: 1 Features of Jebs Choke Tubes Black Nitride High Voltage Waterfowl Choke - 12 Gauge All tubes are made from 17-4 Stainless and heat treated to 44 Rockwell hardness to accommodate any type of shot SteelTungstunHevi-ShotLead or anything the shooter wants to shoot Package Contents: Jebs Choke Tubes Black Nitride High Voltage Waterfowl Choke - 12 Gauge Jebs Choke Tubes JPCBN - 12A2/685: 12 Gauge Remington High Voltage .685 Modified Waterfowl Choke Tube Black Nitride