Features: Brand new and high quality Close-Loop control: MKS SERVO57A is a Close-Loop stepping motor set, which adopts a high-precisions position feedback system to realize Close-Loop control and provide high motion accuracy and stability. High torques output: It has large torques output capacity, and can maintain stable performances when moving at high speed and the load changes, so as to meet the requirements of power output. Easy installation: equipped with adapter board, it is convenient to connect with various types of controllers and circuits, simplifying the installation process. High-precisions positioning: Through Close-Loop control system and position feedback, high-precisionspositioning and motion control can be realized, which can reduce errors and vibration and provide more stable and accurate motion effects. Fast responses: With fast responses time, the speed and position of the motor can be quickly adjusted to meet different work requirements and provide faster dynamic responses. Specifications: Material:Metal+Plastic Type:With Screen/Without Screen Package Includes: 1 Set Stepper Motor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.