J. Dewey ABS-4S .338-.358 Caliber Adjustable Bore Saver Rod Guide for Scoped Rifles - 10" SPECIFICATIONS BRAND: J. DEWEY CA PROP 65: YES CA PROP 65 CHEMICAL: LEAD CLEANING CALIBERS & GAUGES: .338 CAL - .358 CAL CLEANING ITEM TYPE: BORE GUIDES MATERIAL: ALUMINUM USAGE: RIFLE DESCRIPTION Specifications: ABS-4S Adjustable Bore Saver Rod Guide Fits .338-.358 Calibers 10 Inch Overall Length Anodized Aluminum Rod Guide Tube with Solvent Port Adjustable Aluminum Locking Collar with Brass Pin O-Rings to Seal the Chamber and Keep Solvents/Oils Out of Receiver Replaces the Bolt Fits Rifles with .695-.700 Diameter Bolts