Bore brushes are ideal for most bore cleaning jobs. These brushes provide a thorough multi-directional scrubbing action. The bronze bristles return to their original shape and are very durable. A necessity for ensuring bore cleanliness. Product Features • .30-.30 & .30-06 & .308 & 7.62mm • Tough on copper, carbon and lead fouling • Holds up against corrosion and solvents • Durable bronze brush