According to my experience with Industrial and Scientific products, these aluminum fasteners and rivets from Racers Speed Shop are truly fantastic .They are incredibly durable yet lightweight making them perfect for DIY projects. The fasteners come in a variety of sizes and styles, so you can find the perfect fit for almost any application. The only con I can think of is that they are a bit pricier than some other fasteners on the market. However, I believe the quality and versatility of these fasteners more than make up for the higher price point..