KleenBore Handgun Bore Brush .357 SIG/.38 Special/9mm Luger 2 Pack Red. Nylon bristle bore brushes are recommended by many major firearms manufacturers for bore cleaning. Compare their dense array of heavy-duty thick bristles and see why they are so effective for even the toughest cleaning jobs Specifications for KleenBore Handgun Bore Brush: Manufacturer: KleenBore Fabric/Material: Nylon Caliber: 9mm Luger Color: Red Quantity: 2 Gun Type: Handgun Features of KleenBore Nylon Bristle Handgun Bore Brush - 2 Pack Heavy Duty Bristles American Std. #8-32 threads Package Contents: KleenBore Nylon Bristle Handgun Bore Brush - 2 Pack KleenBore 2020149: Handgun Bore Brush .357 SIG/.38 Special/9mm Luger 2 Pack Red