Safariland's KleenBore Patch Holder Bore Brush is designed to provide faster, more efficient cleaning for hunting, law enforcement and military applications. A premium bore brush combined with a slotted patch holder at the front end create one integrated cleaning rod accessory. The brush also puts more of the desired chemical in the bore to work by putting a patch in front of the brush and soaking it with solvent. The patch and phosphorous bronze bristles work in combination for more effective cleaning. KleenBore's Patch Holder Bore Brushes works with any cleaning rod using standard 8X32 TPI and is available in both rifle and handgun calibers.