The Precision Hunter styles chokes are extended knurled and have a black oxide finish. They will normally pattern better than flush mount chokes due to less shot deformation. They are manufactured from high strength 17-4 PH stainless steel. They are suitable for use with steel shot from cylinder through improved modified. All chokes are marked on the head with the degree of choke and on the body with the bore diameter. This style is an excellent choice for the shooter who wants one choke for both field and range shooting. High quality, low maintenance, known constrictions and a reasonable price