This is a genuine Briggs Stratton muffler exhaust, model number 395015. It is a high-quality replacement part for lawn mowers and other outdoor equipment. The muffler is made of durable steel and comes in a gray color. This item is perfect for those who need to replace their lawn mower's exhaust system. It is made in the United States and is compatible with a variety of Briggs Stratton lawn mowers. The muffler comes as a single unit and does not include any custom bundles.