918d series fixed ratio 25mm diameter spur geared motors mfa 918d5001121 single ratio metal gearbox with 5001 gear ratio and 12 to 24v voltage rating suitable for a host of model and light industrial applications these gearboxes are constructed from steel and brass and housed in a protective plastic cover which prevents ingress of dust and dirt and protects the user against accidental contact with the gears the motor is fitted with a bracket with four fixing holes for easy mounting to a