BedLock Safety Products LLC is working hard to make your dump truck repair shops safer when doing routine maintenance or cylinder and hose change-outs. Our BedLock dump bed safety device system secures the raised dump box with two chains, two hooks and our exclusive double key slot retention plate. This system allows numerous ways to secure the bed in an upright position, eliminating the threat of a falling dump bed causing serious injury or death. https://bedlocksafety.com