Product DescriptionThe Breakthrough Clean BT40NBB Nylon Bristle Bore Brush is purpose-built for .40 caliber handgun barrels. Featuring a rugged brass core and stiff nylon bristles, this brush aggressively tackles heavy fouling while protecting the bore from scratching. Its #8-32 threaded shank fits most standard pistol cleaning rods, making it an easy addition to your cleaning kit.Product Highlights.40 caliber bore brush designed for effective handgun barrel cleaningStiff nylon bristles attack heavy fouling without damaging riflingDurable brass core and ferrule for strength and longevityStandard #8-32 threaded shank for broad rod compatibilityIdeal for routine maintenance and deep-cleaning sessionsSpecsProduct Type: Bore BrushCaliber: .40Bristle Material: NylonCore Material: BrassThread: #8-32 (standard shotgun uses #5/16-27 for .410/28g/20g/12g)Weight: 0.02 lbBrand Name: Breakthrough CleanMPN: BT40NBBUPC: 852712005824Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.