The product is a set of pulleys designed for use with Ford vehicles, specifically the Ford M151 or a1 model. These pulleys are essential components in the accessory drive system of the car, allowing the engine to power various accessories such as the alternator, power steering pump, and air conditioning compressor. The high-quality construction and precise design of these pulleys ensure reliable performance and efficient belt operation, making them a crucial part of maintaining the overall functionality of the vehicle. Crank and waterpump pullys 25 amp system.