Description: TL-smoothers are pieces of electronics that can improve the surface quality of 3D printed models You need at least 3 of them, for X, Y and extruder motors Features: The TL-Smoother is an addon module for 3D printer stepper motor drivers The board provides flyback diodes (freewheeling diodes) for the motor outputs, so that they are also protected against induction voltages in the unpowered state of the driver You will got smoother movement especially on the delta-style 3Dprinter under DVR8825 stepper drivers and A4988/2 drivers Lower vibration lower noise smoother result Dimension:40x30mm