ITEM NAME:8 Pieces TL Smoother PLUS Addon Module for RepRap MK8 i3 Motor Drivers Parts Description: TL-smoother Plus is an addon module for 3D printer stepper motor drivers, using eight large diodes (SMC), so that provide better heat dissipation performance. The board provides flyback diodes (freewheeling diodes) for the motor outputs, so that they are also protected against induction voltages in the un.TL-smoother Plus is an addon module for 3D printer stepper motor drivers, using eight large diodes (SMC), so that provide better heat dissipation performance. Model: TL-smoother plus addon module. 8x TL-smoother plus.