The BedLock System, No. BL-450A/B from Bedlock Safety Products is engineered to prevent the unexpected movement of the raised dump bed, increasing user safety. With its robust design and locking mechanism, the BL-450A/B keeps the dump bed in place. Crafted from high-strength materials, this product is built to withstand the rigors of daily use. The BL-450A/B features a dual-chain system that provides redundant safety measures. Even if one chain were to fail, the second would continue to hold the bed in place. It's built for heavyweight, with the ability to bear a maximum load of 50,000 lbs per pair.