We are excellent sellers of Amazon, we will carefully check before shipping. If there is a problem with logistics, please be patient and contact us in time.Welcome to , where Millions of items are waiting for you to buy it and we hope to see you again.Description:- Lesser 57 Series Two-Phase Stepping Motor.- Model : 57HS21A- Temperature: - 10 ~+50C; Humidity: 85%- Step Angle : 1.8° 0.09 degrees (no-load, whole step)- The motor has characteristics of and high torque.Specification:- Material : Metal- Rated Current/phase : 5.0A- Size : Approx. 95x55x55mm / 3.74x2.17x2.17 inchPackage Includes:1 Piece Stepping MotorNote:Please allow a slight difference between the size from the above and the actual item due to manual measurement.