Browning's exceptional 28 gauge Midas Grade Standard Invector Extended choke tubes are available in constrictions from Skeet to Full. All Browning Invector tubes are set to industry constriction standards. It extends beyond the end of the barrel for easy removal and installation. It features a stainless steel construction with black oxide finish and laser-etched gold accent band. The minimum gap geometry plus high-resolution RMS finish reduce plastic buildup in the bore. This choke tube fits 28 gauge Standard Invector choke systems only. Flat choke tube wrench is not compatible with Midas Grade Extended choke tubes.