The design and quality of the system is in the tradition of Graupner's famous high quality propellers for boat and aircraft use. Shafts and bearings are corrosion resistant. Boats fitted with the JET drive can run in very shallow water since there is no rudder, prop shaft, or propeller hanging down. When the reverse mechanism is lowered, the water stream is deflected forwards and the boat runs in reverse. Reduces current draw by about half and doubles the running time.
Basic unit produces pure thrust forward only.
It's even better when used in pairs as in GR2133 Jet Star. Weighs 10.5 oz. It can be installed into deep-V's, and flat bottom boats with by just making a simple cutout and some reinforcement in the boat bottom. Turn rudders and reverse bucket are included. Use glow engines from .21 to .90 or strong electric motors like Mega and Ultra's.