These bolts are the perfect choice for any automotive exhaust system installation. Made from high-quality stainless steel they are highly durable and long-lasting. The pack comes with five of these bolts which can be used for a variety of applications. they can easily withstand the high temperatures, fumes, and corrosion that come with exhaust systems. The only con is that they are slightly pricey compared to other bolts in the market .Overall, a great buy for anyone looking for reliable, long-lasting bolts for their automotive exhaust system..