Dimension information: 
Motor diameter: 15.5mm 
Body height: 12mm 
Body length: 18.6mm 
Shaft diameter: 1.5mm 

Technical Performance: 
FF-030PA-10180 
Voltage range: 3-4V 
Working voltage: 3.5V 
Rated Speed: 5600r/min 
Rated Current: 0.2A 
Counterweight: R6.0*9.6 
Stall Current: 0.55A 

FF-030PK-11150 
Voltage range: 2-4.5V 
Working voltage: 4V 
Rated Speed: 6000r/min 
Rated Current: 0.5A 
Counterweight: R6.0*9.6 
Stall Current: 1.1A