Drag Specialties Bob Retro-Style Air Cleaner. Retro-style air cleaner measures 5-1/2 in diameter. Replacement filter element available separately. Requires appropriate carb support bracket. All necessary mounting hardware included. We will accept your request at our earliest opportunity. This includes Republic Of Ireland. Please do not ask us to lower the value of goods this is illegal and we do not want to get involved in this kind of activity.