Discover the ultimate cleaning tool for your 12 Gauge shotgun at Breakthrough Clean Technologies.Crafted for 12 Gauge barrels the phosphorus bronze bristle Bore Brush #BT12GPBBB is armed with a No. 5-16-27 thread a robust brass core and stiff bronze bristles.Its aggressive design is tailored to combat stubborn carbon build-up in your firearm making it an essential addition to your shotgun cleaning kitPrecision nylon brushes for care - elevate your firearm's performance with consistent precise and accurate shooting our brushes with their rigid and durable core ensure no scratching or marring during cleaning Elevate your maintenance routine and ensure peak shooting accuracy with a durable and effective phosphorus bronze bristle Bore Brush. *One per package.Features / SpecsBrand: BreakthroughManufacturer #: BT-12GPBBBThread Pattern: #8-32Series: Bore BrushGun Type: ShotgunBristle Type: Phosphor BronzeModel: Phosphorus BronzeGauge: 12 GaugeMaterial: Brass