Bore Brushes are ideal for most bore cleaning jobs. These brushes provide a thorough multi-directional scrubbing action. The nylon bristles return to their original shape and are very durable.Features : Heavy-Duty, Stiff Red Nylon Bristles For Long-Lasting Use Dense, Thick Bristles Tackle The Toughest Cleaning Challenges Sturdy Red Nylon Bristles Designed For Durability And Extended Use Effectively Cleans Copper, Lead, Plastic Wad, And Carbon Burn