Otis Technology Universal Bore Guide Kit Combo. Proper rod alignment prevents bowing and bending which can damage the bore. The built-in solvent port reduces the chance of spilling and wasting solvent which could ruin the finish of your firearm. The Universal Bore Guide also includes a collar designed for MSR/AR style rifles which creates a tighter fit and additional support of the upper receiver while cleaning your rifle. Fits most centerfire and bolt-action rifles. Specifications for Otis Technology Universal Bore Guide Kit: Manufacturer: Otis Technology Color: Combo Features of Otis Technology Universal Bore Guide Kit Protects chamber and bore from damage Aligns rod with barrel for faster cleaning Reduces solvent leakage into action Fits most bolt-action and MSR/AR style rifles Solvent port protects firearm finish from chemicals Thumbscrew collar lock for securing bolt into position Package Contents: Otis Technology Universal Bore Guide Kit Otis Technology FG-BG-U: Universal Bore Guide Kit Combo