Hello everyone, this is Tiger Huang from Kingbell International Technology Development Co.,LTD., who is a manufacturer of Step Motor Controllers. Our Step Motor Controller size only 1.665*1.665*0.53 inch with the enclosure, 2A/4A/8A PEAK CURRENT, 1-16 microstepping, standalone. Parallel type for normal usage and Serial and CAN 2.0 type for higher applications. Welcome all electronic wholesalers catch this opportunity to cooperate with us.