Product DescriptionCarlson&';s Cremator Ported Choke Tubes deliver consistent patterns for waterfowl across mid and long ranges. Featuring Triple Shot Technology-a series of three graduated rings in the taper section-these 17-4 stainless steel tubes provide a smooth transition from bore to final constriction, reducing pellet deformation and flyers while increasing density. Designed for Browning Invector Plus 20-gauge shotguns, this extended, wrench-less pair allows quick installation and removal and helps protect the muzzle. Made in the USA.Product Highlights Triple Shot Technology for tighter, more uniform patterns Two-pack includes Mid Range (MR) and Long Range (LR) ported chokes Extended design with longer parallel section for improved performance Wrench-less installation with quick removal and added muzzle protection Precision-machined from heat-treated 17-4 stainless steel; Made in USA Specs Gauge: 20 Gauge Compatibility: Browning Invector Plus shotguns Constrictions Included: Mid Range (MR) and Long Range (LR) Configuration: Ported Material: Heat-treated 17-4 stainless steel Finish: Black Included: 2 choke tubes Country of Manufacture: USA Weight: 0.285 lb UPC: 723189114923 Manufacturer Part Number: 11492 Brand: Carlsons Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.