Possum Hollow Bore Guide #46 - .375 - .500 Fits Remington 700, Winchester Model 70, Mauser, No O-Ring

Aligns the cleaning rod centrally to the bore to prevent throat or rifling damage. O-ring seals the chamber and prevents solvents from contaminating the action and trigger and helps to keep the bore guide firmly in place. Large replacement O-ring fits all guides and solvent port.