Brownells Standard Line Nylon Bore Brushes are sold in bulk packs for convenience and cost savings.
The brushes feature a one-piece, looped and wound steel shank for durability, with nylon bristles that are safe for use with aggressive cleaning solvents.
Designed for .475 caliber handguns, these brushes have an overall length of 2-1/8 inches and use 8-32 thread, except for .17 caliber which uses 5-40 thread.