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 or  A4988/2 drivers. 

TL-Smoother assembly instructions
The color of the product is based on actual conditions.
8 big Package(SMC)diodes provides better heat dissipation performance
that can handle bigger motor than small diodes.
Lower vibration lower noise smoother result!

Package included:

1Pc TL-smoother PLUS addon module