ITEM NAME:TB6600 Single Axis 4A Stepper Motor Driver Controller 9~40V Micro-Step LJ #aucsearchbutton #aucsearchbutton:hover { cursor: pointer;.Applicable stepper motor: 42.57, 86 Phase type phase (4 wire 6 wire 8 wire line). the maximum output current of 4.0A eight optional;. standard common anode single pulse interface;. provide semi-automatic current locking function;.