Remington Rem Chokes are a system of interchangeable choke tubes and extended chokes that allow you to quickly and easily change the choke of your shotgun to match specific hunting conditions, seamless stainless steel construction gives them the strength to handle steel or lead shot without wear or loss of constriction. Remington Choke Tube for 870, 11-87 or 1100 Shotguns Skeet - 12 Gauge - Steel or Lead Full - 12 Gauge - Lead Only Improved Cylinder - 20 Gauge - Steel or Lead Full - 20 Gauge - Lead Only