Features: brand new and high quality can effectively eliminate the mechanical chatter generated by 3D printer motors, especially for parallel arm configurations of the machine power is significant. Lower vibrations, lower noise, smoother results. Effectively solve the heat dissipation during the use of the module, reduce the hot conditions and increase the life of the module. Also protected against inductance voltages in the de-energized state of the driver. Eliminate vibration streaks effectively, especially on A4988 DRV8825 etc stepper motor driver that we have tested. The package contains: 4 Set in TL-Smoother Specifications: Name: Stepper Motor Driver Filter TL Smoother Filter Size: 4x3cm/1.57x1.18in Material: ABS + Metal Weight: 40 g note: Due to the problems of lighting effects and shooting angles, there will be some tolerances in the product, please understand.