Wilson Combat Brush Chamber Cleaning Tool Replacement .45 ACP. Unfortunately your .45 bore brush is the wrong diameter and usually too soft to remove chamber contamination. You need a Wilson Chamber Cleaning Tool. This tough little tool has a sturdy Delrin handle and very stiff nylon bristles to thoroughly clean your chamber. If you own a .45 you need this little tool. Specifications for Wilson Combat Brush Chamber Cleaning Tool Replacement: Manufacturer: Wilson Combat Caliber: .45 ACP Gun Type: Pistol Package Contents: Wilson Combat Brush Chamber Cleaning Tool Replacement Wilson Combat 803-45B: Brush Chamber Cleaning Tool Replacement .45 ACP