CARLSONS CHOKE TUBE FLUSH MOUNT 20GA IC TRU-CHOKEDimension: 1.20 X 3.80 X 7.80Height: 1.2000Width: 3.8000Length: 7.8000GAUGE: .20 GAUGECHOKE/ID: IMPROVED CYLINDERFLUSH OR EXTENDED: FLUSHMATERIAL: STAINLESS STEELOTHER FEATURES:: .610 DIA.,SAFE FOR USE...