Ruger has the right truck crane to meet your needs.
Tm Models feature hydraulic lifting by hand pump, (DC electric power-pak optional), 2-speed operation (except 1/4 toner), precision release valve, hydraulic overload relief, boom swings manually 360 degrees in bearing. These cranes are available 1/4 ton through 3 ton.
Star Truck Cranes
The star truck cranes are inexpensive but well built. They are available as hand pump or electric Models with capacities from 1/2 through 2 tons. Power for the electric models comes from your 12 volt truck battery.