AC Gear Reduction Motor Electric+Variable Speed Control Reversible 110V 250W. Our products are divided into two packages. If you only receive one package, please contact our customer service for the logistics information of the other package. Reduction ratio: 1:10(10K). Under different deceleration ratio, the output shaft speed is different.The output shaft speed is equal to the motor speed of 1350 rpm divided by the deceleration ratio. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it's non-workdays, please kindly be patient and wait till Monday. Creative Design, Durable Material, Beautiful Appearance. Easy installation, Convenient Use, Easy Operation.