In addition to world-class ammunition for your needs, HEVI-Shot® also offers the best chokes for your hunt, with gun-specific, game-specific styles available for most gun models. Manufactured from aircraft quality 17-4 stainless steel, they’re guaranteed for a lifetime. With a knurled fore-end, you can leave your choke wrench at home, changing tubes in a field is easy! Available in Mid-Range (out to 40 yards) and Extended-Range (past 40 yards). Available in 12 and 20 gauge, in ported and non-ported versions, HEVI-Choke™ choke tubes help you squeeze every bit of performance from your HEVI-Shot® ammunition. 20 gauge tubes are available in extended range only. WARNING! Extreme range choke tubes are not recommended for steel pellets larger than BB or excessive speed of more than 1550 fps. Use mid-range choke tube for those applications.