Item: Bore Brushes are ideal for most bore cleaning jobs. These brushes provide a thorough multi-directional scrubbing action. 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.