The TL-Smoother is an addon module for 3D printer stepper motor driversLower vibration lower noise smoother resultThe board provides flyback diodes (freewheeling diodes) for the motor outputsAlso protected against induction voltages in the unpowered state of the driverYou will got smoother movement especially on the delta-style 3Dprinter under DVR8825 stepper drivers and A4988/2 driversColour: blackMaterial: PCB boardPackage Contents:5 x Stripper5 x DuPont lineOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.