The A series is not to be underestimated. Although small and extremely light (11 lbs), this starter provides quite a punch with 15 ft-lbs of torque and the ability of turning at 7000 RPM. This translates into extremely fast engine starting of engines up to 9 liters (549 cu. in.). These smaller engines are quite common on lifeboats, which is a prime example when fast starting is paramount.