The BUYERS 18" x 16" x 90" diamond tread aluminum TopSider truck tool box features aluminum construction that ensures the box remains lightweight while offering robustness for manageable transportation. Its TopSider design is crafted to maximize the truck bed space, enabling a more efficient use of the cargo area. A weather-resistant seal is included to safeguard tools from moisture and harsh weather conditions. The secure locking system is designed to keep your tools safe and prevent unauthorized access. Additionally, the sleek aluminum finish adds to the aesthetic appeal of your truck.