Scratches on the inner spot of carabk pulley doesn’t catch nail when scratching The Moroso Aluminum Crank Pulley is specifically designed for Big Block Chevy engines, providing a performance part with a sleek and durable design. The pulley is not universally fitting, ensuring a precise fit and optimal performance for your vehicle. Made by the reputable brand Moroso, this crank pulley is a reliable and high-quality accessory for your car or truck.