The butler creek shotgun plug fits most 12, 16 and 20 gauge pump and automatic shotguns chambered for 2.5", 2.75" or 3" shells.It can be cut to the desired length to limit the magazine capacity to 2 rounds.The durable plastic will not collect moisture and possibly rust your gun like wooden plugs.Finish: BlackType: Shotgun Magazine PlugModel: Shotgun PlugSize: Fits Most 12/16/20 Gauge ShotgunsMaterial: Plastic