These fans are the best on the market! HERE’S WHY: High torque, low amperage draw motor. The motor rides on Dual Ball Bearings, not on bushings like some others. Reversible Fan Blades engineered to provide maximum airflow. Our fans provide more efficient cooling at low speeds where it is needed most. They also free up more usable horsepower to the rear wheels, and increase fuel economy. Their extremely low profile design makes installation easy even in very limited space. With five sizes to choose from, all being reversible, it makes it easy to find your customers the correct fan for their specific application. Ideal for replacement automotive engine cooling fans where applicable, remote engine oil or automatic transmission oil cooler applications. Perfect for installations where airflow is limited or does not exist in, such as under chassis, rear under-body, and trunk mount cooler installations. Perfect for street rods, recreational or owing vehicles, custom-built kit cars and engine swaps.