JET-Antrieb 6 Graupner 2395 The JET Propulsion Unit 6 Booster differs from the JET Propulsion Units 2 and 3 only in the modified inlet pipe, which is now made of injection-moulded plastic. The JET Propulsion Unit 6 Booster is designed for the MANHATTAN 74 RC motor yacht, in conjunction with the reversing unit, Order No. 2346.1, but it can also be installed in other model boats. A motor mount is also supplied the mount can be attached directly to the JET Propulsion Unit 6 Booster to form a unit. Inlet pipe, impeller duct, 29 mm Ø impeller, thrust nozzle, guide vanes (all parts injection-moulded plastic), 100 x 6 mm Ø stern tube, 130 x 4 mm Ø propeller shaft.