Possum Hollow Bore Guide #45i w/Integrated Solvent port - .338 Remington Ultra Magnum Fits Remington 700, Winchester Model 70, Mauser Integral Solvent Port

The use of a bore guide otherwise known as a rod guide aligns the cleaning rod centrally to the bore to prevent throat or rifling damage. An 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.