Truck beds, with the exception of those for pickups, are purchased separately from trucks. Many local and regional fabrication shops build truck beds. Several manufacturers build regular, service, and crane specialty truck beds. Telescoping cranes that mount on service truck beds are useful for lifting heavy loads when repairing tractors and implements. They are powered by the truck’s heavy-duty battery. Boom capacities range from 2,000 to 10,000 pounds and reach varies from 4 to 25 feet. Truck and cargo bed size determines the size of a crane. Crane companies usually offer service cargo beds that match crane and truck size.