BTQ 185 3 KW 12V 55Kgf Mono thruster - Hydrodynamic bronze base - Composite 4-blade propeller: corrosion resistance and minimum current absorption - Composite relay protection box - 12V - 3 KW power - 55 Kgf thrust - Elastic coupling - Aluminium motor support - Microprocessor to prevent overheating - Reversible torque with timer. - Timed automatic stop.