There are two specs of products,Random transport A:4r/min B:5/6r/min The look of the product may possibly replacement slightly because of various production 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, heat air blower, electric heaters, burn oven, degree light fixtures equipment, microwave oven, and other forms of electric appliances.