MACHINE WASHABLE and REUSEABLE: Make sure that the bore rope are ready for proper use the next time you need them. LIGHTWEIGHT and COMPACT: You can roll a up in your pocket in the field and then run it through a couple of times to relieve dirty quickly. It is great application for the military and recreational shooting. SOLVENT COMPATIABLE: The nylon bore rope absorbs gun brushing solvent well and there is no exposed metal to damage sensitive rifling or crown. WELL-DESIGNED: 1. Brass weight slips easily through barrel. 2. First floss area relieves foreign particles prior to the scrubbing action of the brush. 3. Bore brush embedded in the cord loosens hard deposits. 4. Main floss area with 160 times more surface area than a brush like no other product. WIPE IN ONE QUICK PASS: The bore rope scrapes gunk out of the barrel and follows with a smooth cloth to wipe it brush and lubricate in one quick pull-through. Note: Each item includes 2 bore brushing for 22 Cal .223 Cal & 5.56mm + 38 Cal .357 Cal .380 Cal & 9mm + 30 Cal .308 30-06 .300 .303 & 7.62mm + 12GA Gauge.