Brownells nylon bore brushes are sold in bulk packs for convenience and cost savings, designed to withstand aggressive cleaners without scratching the bore.
The brushes feature a one-piece, looped and wound steel shank for durability, with the exception of certain calibers that have brass shanks.
Specifically designed for handguns, the 40 caliber 8-32M nylon pistol brush is suitable for .410-.412 and .400-.401 calibers, with an overall length of 2-1/8 inches.