Carlson's Choke Tubes Cremator Waterfowl Non-Ported Choke Tubes Remington 2 PK MR & LR. This is accomplished by the Carlson's Pro Bore & Express Choke Tube's elongated parallel section which is 25percent longer than previous models. This provides you with tighter denser patterns regardless of the caliber that you use. This is due to the fact that the longer parallel section acts much like a longer choke tube. These choke tubes also have an extra long parallel section at the end where the constriction starts to broaden out. These Carlson's choke tubes have an optimum constriction for waterfowl hunting with shot in any of the three constrictions. This feature gives you the most efficient and effective pattern without deforming the shot. Remember to take your Carlson's Waterfowl Choke Tubes with you on all of your waterfowl hunting trips for the best results. Specifications for Carlson's Choke Tubes Remington Cremator Waterfowl Choke Tube: Manufacturer: Carlson's Choke Tubes Color: Black Fabric/Material: 17-4 Stainless Steel Gauge: 12 Choke Tube System: Remington Choke Gun Make: Remington Included Accessories: Choke Wrench Condition: New Country of Origin: USA Features of Carlson's Choke Tubes Cremator Waterfowl Remington Choke Tubes Cremator Ported Remington 2 PK (MR & LR) Package Contents: Carlson's Choke Tubes Cremator Waterfowl Remington Choke Tubes wrench Carlson's Choke Tubes 11632: Cremator Non-Ported Choke Tubes for Remington 2 PK (MR & LR)