The OEM Proform Elliptical Bike Resistance Motor Brake Tensioner 193223 6v is a replacement part designed specifically for elliptical and exercise bikes. Manufactured by ProForm, a trusted brand in fitness equipment, this black resistance motor is compatible with Treadmill Doctor products and comes with a 1-year manufacturer warranty. Weighing 0.9 lbs and measuring 4 inches in both height and width, this unit is suitable for gym training and running activities, providing the necessary tension to enhance the workout experience. Made in China, this resistance motor is a quality component to ensure smooth and effective performance of your fitness machine.