Tapco Nylon Pistol Brush - Pack of 2 Red .38 Caliber/.357 Caliber/9mm Lugger. 38/.357/9mm Nylon Pistol Brush - Heavy Duty Red Bristles - 2 Pack - TAPCO Heavy Duty Nylon Bristle bore brushes are made with a tightly wound brass core and oversized extra thick fill bristles. The thicker stiffer grade bristles allow for back and forth action and eliminate heavy fouling fast. Specifications for Tapco Nylon Pistol Brush - Pack of 2: Manufacturer: Tapco Color: Red Fabric/Material: Nylon Caliber: .38 Special .357 Magnum 9mm Luger Projectile Caliber: .355 Caliber .357 Caliber .38 Caliber Tapco TAP22076 Pistol Brush 38/357/9mm Nylon 2Pack Tapco TAP22076: Nylon Pistol Brush - Pack of 2 Red .38 Caliber/.357 Caliber/9mm Lugger