... 42 and motor driver Step Angle: 1.8 or 0.9 Deg Nema 23 Stepper MotorFrame size 57mmwith length 41 to ... available with different length.-1.8 1.2 and 0.9 degree-square, round, high torque, standard versions-Up to four ... 23 stepping Motor, 57mm step motor, 1.8 or 0.9 Degree step angle