Image Item No. Description  6216m1  Electric, Motor 4.5V Type 1 for 2-prong connectors without Middle Pin Catalog: Parts: Electric, Motor  6216m2  Electric, Motor 4.5V Type 2 for 2-prong connectors with Middle Pin Catalog: Parts: Electric, Motor  87577c01  Electric, Motor 9V Power Functions with Gear Reduction Ratio 9.5 : 1 Catalog: Parts: Electric, Motor  48064screwp  Electric, Motor with Boat Propeller - Plastic Locking Screw Catalog: Parts: Electric, Motor