Extends beyond the end of the barrel for easy removal and installation; Stainless steel construction with black oxide finish; Laser-etched black chrome accent band; Minimum gap geometry plus high-resolution "RMS" finish reduce plastic buildup in bore; Available in constrictions from Cylinder to X-Full; Fits 12 gauge Invector-Plus choke system ONLY; Flat choke tube wrench is not compatible with Midas Grade Extended choke tubes