Remington Choke Tube Upgrade Kit, 12-Gauge: * Fits: Remington 870, 1100, and 11-87 (equipped with interchangable Rem Choke tubes) * Gauge: 12 * Short-range choke that delivers wider shot patterns for game within 35 yard range * Delivers tight, well-placed shot patterns when shooting between 45-55 yards * Magazine cap with swivel stud included * Choke Tube Speed Wrench offers a fishing reel-type handle for faster, easier choke tube changing * Limited lifetime warranty * Model# 19423