Features: TMC5160T Plus V1.0 is a high-power stepper motor driver chip with external power MOS tube expansion. The maximum current can reach 15A, and the heating during operation is minimal. Supports up to 60V, 10.6A IRMS, and 15A current. TMC5160T Plus can improve printing speed accuracy and drive high-power motors, achieving a new level of quality and efficiency in 3D printing technology. Difference between having a housing and not having a housing: Quality metal housings are expensive. If the original drive is damaged, it can be replaced directly without needing a housing-less drive. Specifications: Material: Plastic Size: Approx. 50x58x28mm/2x2.3x1.1in Types: Without Housing / With Metal Housing Note: Due to lighting effects and shooting angles, there may be some tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement.