Money-saving brush does not require a separate cleaning rod. Nylon bristles work great with bore cleaners that aggressively attack copper fouling and traditional bronze brushes. Brass handles won't scratch the bore. Sell one with every new or used gun. Mfg: Brownells Specs: Bristles - Nylon, .014 (.355mm) dia. 1 (3.1cm) brush length, 8 (20.9cm) overall length. 9mm/.38/.357 - .406 (10.31mm) diameter, .40/10mm - .435 (11.04mm) diameter, .45 - .50 (12.7mm) diameter.