The Gold Band tube. Workhorse tubes for sporting or hunting. Exceptional patterning. Choose from a full selection designed to fit 20 gauge Invector-Plus shotgun barrels only. – The Midas touch. These exceptional tubes extend beyond the end of the barrel for easy removal and installation. They are tough with their stainless steel construction with black oxide finish and laser-etched gold accent band. If you are looking to upgrade from flush mount Invector-Plus tubes this is an excellent tube to do it with. Performance and practicality meet here. – Minimum gap geometry plus high-resolution “RMS” finish reduce plastic buildup in the bore – Invector-Plus long taper choke tube technology – Made for barrels designated as 20 gauge Invector-Plus ONLY – Material 17-4 Stainless Steel – Color Black – Pockets Black Oxide – Choke Gauge 20 – Choke Pattern Percentage 55%-85% – Length 0.035 – Weight 4.8 oz