Dewey Anschutz 54 Delrin Rod Guide Using a bore guide helps prevent unwanted solvent and grime from working its way into the trigger and other sensitive parts of the rifle. A bore guide also takes out the slop from rod keeping it centered in the bore. It also helps protect the rod and its coating from getting damaged. SPECIFICATIONS .22 Rimfire Made from Delrin Weight .2 lbs Dimensions 4 x 2 x 1 Part# A-54