Key featuresreliable high-power 12V DC motor for airplanes, cars, boats or helicoptersconvenient and easy to operatehigh-torque output starts engines up to 1.Cubic inches in sizemounts easily to power Pro portasourcesilicone rubber insert included two versions available: standard 12V and hd2-year warrantyoverviewget planes, boats, heli and cars started quickly and conveniently. Powerful 12-volt DC motor provides at least 248 oz/in of torque.