A combo of spring-loaded bore guide with 3 interchangeable tips and 4oz bore solvent makes bore cleaning a fast and effortless task. The Smart-Fit Bore Guide is the ultimate and first-of-its-kind spring-loaded, precision cleaning tool providing worry-free cleaning. The spring-loaded slider locks, providing a secure fitment and ensures a consistent chamber sealing with zero movement when running brushes and patches through your bore. An anodized aluminum tube is designed for lasting durability and the contoured, non-marring, bore-specific tips ensure damage- free, precise fitment on centerfire rifles from .243 – .375 caliber. An aggressive bore cleaning solvent, formulated to get rid of carbon and copper deposit. Make the most of your barrel's accuracy by keeping your bore clean and preventing bore erosion.