Lyman's new universal bore guide protects both the chamber and the bore from abrasion by the cleaning rod during regular cleaning. "Universal" means that this set will fit most bolt actions.
This item is made from precision machined from durable, anodized aluminium and comes with interchangeable tips that cover bore sizes from .17 up to .416. The thread-on nozzles prevent the guides sticking in the chamber, whilst the guides specially machined port makes applying solvent to the inserted cleaning patch easier and neater than trying to push a wet patch into the open end of the guide.
The Universal Bore Guide Set works with most cleaning rods like Lyman's new Universal Cleaning Rod System and Jag and Brush Set.