Set these stops on your cleaning rod and you can set the exact depth to which the rod travels through the bore. Perfect for use in conjunction with a bore guide. These rod stops will keep you form impacting the rifles action and damaging the rifles crown. They will also eliminate any harsh impacts on the action of the rifle by the metallic bases of some cleaning rods. For use with all cleaning rods! FeaturesPlace this stop on your cleaning rod, to set the distance that the rod travels through the bore.Prevents impact on the action and also damaging the crown. Fits cleaning rods for 270 to 45 caliber.Use with any brand rod.