Miniature size 42.3mm*42.3mm*13.5mm Fit onto motors seamlessly step motor controllers UIROBOT UIM24302-A step motor controllersMiniature Integral Design− Miniature size 42.3mm x 42.3mm x 16.5mm (L x W x H)− Integrally designed to fit onto motors seamlessly, as well as work standalone− Die-cast aluminum enclosure, improved heat dissipation and durabilityMotor Driver Features− 10 - 30VDC input ...