Bore Tech's double wound Proof-Positive Nylon Brushes are designed with superior construction, including twice as many bristles for more effective cleaning.
These brushes feature oversized bristles for strength and non-brass cores and couplers to prevent false copper fouling indications.
The .17 and .20 caliber rifle brushes are designed shorter to reduce force and prevent barrel damage, best used with Bore Tech's fast-acting copper cleaners.