How to use: First, find a suitable place on your kart chassis, like the seat or floor tray, to mount the lead weight. Then, use bolts to secure it through the pre - drilled holes. It's simple and straightforward. Note that because it's heavy, you might need a friend's help when handling it. When it comes to maintenance, there's not much you need to do. Just keep it dry and free from any corrosive substances. If you notice any damage, it's best to replace it to ensure the safety and performance of your kart. And remember, due to its weight, there's a small shipping fee per piece, and expedited shipping may cost more than shown at checkout.