M4*55 coarse Super Long Thread N20 Motor Screw Reduction(30,3V)
M4*55 coarse Super Long Thread N20 Motor Screw Reduction(1000,6V)
M4*55 coarse Super Long Thread N20 Motor Screw Reduction(100,6V)
M4*55 coarse Super Long Thread N20 Motor Screw Reduction(50,6V)
M4*55 coarse Super Long Thread N20 Motor Screw Reduction(200,6V)
M4*55 coarse Super Long Thread N20 Motor Screw Reduction(500,6V)