There are two specs of products,Random transport A:4r/min B:5/6r/min The appearance of the product could exchange barely because of diversified manufacturing batches. But the traditional of the product is the same. Product description: This is a synchronous motor, with 2 pin terminals. Low noise. Applications: fan, warmth air blower, electrical heaters, burn oven, stage lights equipment, microwave oven, and other forms of electrical appliances.