electric linear dc stepper motors 1)20mm,6V,18 degree 2)starting frequency-600gf.cm/600PPS 3)exciting mode-unipolar ModlePM20L-020ZXSREW Stroke11mmVoltage12 VPush Torque 600gf.cm/600PPSPitch0.5Step Angle1.8 degree/2-2Resistanc12 ohmsExciting ModeunipolarStarting Frequency650 PPS Welcome to inquiry our electric Linear dc stepper motors! electric linear dc stepper motors